CDR Registration Examination for Dietitians (RD Exam) — Questions and Answers

Question 1: Which breastfeeding characteristic makes human milk superior to infant formula for immune protection in newborns?

Presence of secretory IgA and lactoferrin (Correct answer)
Higher iron concentration
Higher caloric density
Lower lactose content

Correct answer: Presence of secretory IgA and lactoferrin

Secretory IgA and lactoferrin in breast milk provide passive immunity and inhibit pathogen growth in the infant's gut.

Question 2: This table is an example of zero-based budgeting. How does this type of budgeting differ from other types of budgeting?

Zero-based budgeting is created by lower level management and submitted to upper management for approval
Zero-based budgeting allows for changes based on unexpected cost differences
Zero-based budgeting adds expenses as they are deemed necessary and justifiable (Correct answer)
Zero-based budgeting is created by upper level management and submitted to lower level management

Correct answer: Zero-based budgeting adds expenses as they are deemed necessary and justifiable

Zero-based budgeting starts at a zero balance and does not rely on a previous year's performance or actual results. This type of budget requires management to take a look at expenses and justify the expenses, or consider alternative products and services.

Question 3: What are the educational requirements to sit for the CDR nutrition examination?

High school diploma
Associate's degree in liberal arts
Master's degree in business administration
Bachelor's degree in dietetics or nutrition from an accredited program (Correct answer)

Correct answer: Bachelor's degree in dietetics or nutrition from an accredited program

Candidates must have completed specific academic requirements in accredited programs in dietetics or nutrition to be eligible for the CDR examination.

Question 4: What is the recommended upper limit for added sugar intake for children ages 2–18 years, according to the American Heart Association?

Less than 50 grams (12 tsp) per day
Less than 10 grams (2.5 tsp) per day
Less than 25 grams (6 tsp) per day (Correct answer)
No restriction for children

Correct answer: Less than 25 grams (6 tsp) per day

The AHA recommends children aged 2–18 consume less than 25 grams of added sugar daily and avoid added sugars in children under 2.

Question 5: In Commission on Dietetic Registration Exam, what does "statistical significance" mean?

The result is practically important in real-world terms
The findings confirm the researcher's hypothesis
The result is unlikely to have occurred by chance alone (typically p < 0.05) (Correct answer)
The study used a large sample size

Correct answer: The result is unlikely to have occurred by chance alone (typically p < 0.05)

Statistical significance indicates that an observed result is unlikely to have occurred by random chance, typically when the p-value is less than 0.05 (5% probability of occurring by chance).

Question 6: Which formula characteristic makes semi-elemental formulas preferable to standard polymeric formulas in a patient with pancreatic insufficiency?

Pre-hydrolyzed protein and medium-chain triglycerides (MCTs) requiring less digestion (Correct answer)
Greater fiber content to improve gut motility
Higher fat content for caloric density
Higher osmolality for better absorption

Correct answer: Pre-hydrolyzed protein and medium-chain triglycerides (MCTs) requiring less digestion

Semi-elemental formulas contain partially digested (hydrolyzed) proteins and MCTs that require minimal pancreatic enzyme activity, making them ideal for pancreatic insufficiency where enzyme secretion is impaired.

Question 7: Which area of study is included in the nutrition science domain of the CDR examination?

Geography
Music theory
Biochemistry and physiology (Correct answer)
Political science

Correct answer: Biochemistry and physiology

Nutrition science domain covers areas such as biochemistry, physiology, and metabolism.

Question 8: What is the minimum energy availability threshold below which the Female Athlete Triad risk significantly increases?

30 kcal/kg FFM/day (Correct answer)
45 kcal/kg FFM/day
20 kcal/kg FFM/day
55 kcal/kg FFM/day

Correct answer: 30 kcal/kg FFM/day

Energy availability below 30 kcal/kg fat-free mass per day is associated with menstrual dysfunction, low bone density, and other health consequences.

Question 9: Which formula is recommended as the primary nutrition source for premature infants in the NICU who cannot receive human milk?

Premature infant formula with higher protein and caloric density (Correct answer)
Whole cow's milk
Soy-based infant formula
Standard term infant formula

Correct answer: Premature infant formula with higher protein and caloric density

Premature infant formulas provide higher calories (22–24 kcal/oz), protein, calcium, and phosphorus to meet the accelerated growth needs of preterm infants.

Question 10: What is the correct order of priority in Commission on Dietetic Registration Exam patient care?

Documentation, Assessment, Treatment
Treatment, Documentation, Assessment
Circulation, Airway, Breathing
Airway, Breathing, Circulation (ABC) (Correct answer)

Correct answer: Airway, Breathing, Circulation (ABC)

The ABC priority (Airway, Breathing, Circulation) ensures life-threatening conditions are addressed in the correct order: securing the airway first, ensuring adequate breathing, then assessing circulation.

Question 11: In Commission on Dietetic Registration Exam, what is the purpose of baseline assessment?

To compare performance across different organizations
To establish a starting point for measuring future progress (Correct answer)
To determine budget allocations
To provide a final evaluation of performance

Correct answer: To establish a starting point for measuring future progress

Baseline assessment establishes the initial level of knowledge, skill, or condition before any intervention or training begins, providing a reference point for measuring subsequent progress.

Question 12: What is the purpose of documenting patient care in Commission on Dietetic Registration Exam?

To monitor employee productivity
To satisfy curiosity about patient conditions
To create a legal record, ensure continuity of care, and support communication among providers (Correct answer)
To justify billing charges only

Correct answer: To create a legal record, ensure continuity of care, and support communication among providers

Documentation creates a legal record of care provided, supports communication among healthcare team members, ensures continuity of care, and provides data for quality improvement and research.

Question 13: In Commission on Dietetic Registration Exam, what is sampling bias?

Randomly selecting participants from the entire population
Using the largest possible sample size
A systematic error where some members of a population are more likely to be selected than others (Correct answer)
Selecting a perfectly representative sample

Correct answer: A systematic error where some members of a population are more likely to be selected than others

Sampling bias occurs when the method of selecting participants systematically favors certain characteristics over others, resulting in a sample that does not accurately represent the target population.

Question 14: In Commission on Dietetic Registration Exam, what is the primary purpose of formative assessment?

To assign final grades at the end of a program
To monitor progress and provide feedback during the learning or development process (Correct answer)
To determine eligibility for advancement only
To rank individuals against each other

Correct answer: To monitor progress and provide feedback during the learning or development process

Formative assessment is conducted during the process to monitor progress, identify areas needing improvement, and provide timely feedback that can guide adjustments.

Question 15: Melissa has created a new nutrition screening tool. How would Melissa validate her tool to prove its effectiveness?

Ask for feedback from Registered Dietitians
Submit it to a clinical journal for review
Use laboratory values to show inclusivity
Use statistical data to prove its usefulness (Correct answer)

Correct answer: Use statistical data to prove its usefulness

Validated tools are ones that have been statistically proven to be effective. Validated tools include: Malnutrition Universal Screening Tool, Nutrition Risk Screening 2002, Mini Nutrition Assessment, and the Subjective Global Assessment.

Question 16: What is the purpose of peer review in Commission on Dietetic Registration Exam research methods?

To guarantee that all research is approved
To allow friends to proofread for spelling errors
To have qualified experts evaluate research quality before publication (Correct answer)
To speed up the publication process

Correct answer: To have qualified experts evaluate research quality before publication

Peer review involves independent evaluation of research by qualified experts in the field, assessing methodology, validity, significance, and contribution to knowledge before publication.

Question 17: A distance runner asks about iron supplementation. Which form of dietary iron has the highest bioavailability?

Non-heme iron from plant sources
Ferric iron from supplements
Non-heme iron enhanced with vitamin C
Heme iron from animal sources (Correct answer)

Correct answer: Heme iron from animal sources

Heme iron from meat, poultry, and fish is absorbed at 15–35%, significantly higher than non-heme iron at 2–20%.

Question 18: What is the metabolic complication associated with excessive glucose infusion rates in parenteral nutrition?

Hypoglycemia rebound effect
Lactic acidosis from underutilized glucose
Hepatic steatosis and elevated liver enzymes due to lipogenesis (Correct answer)
Metabolic alkalosis from glucose oxidation

Correct answer: Hepatic steatosis and elevated liver enzymes due to lipogenesis

Excessive carbohydrate delivery in PN promotes hepatic de novo lipogenesis (conversion of glucose to fat), leading to hepatic steatosis, elevated transaminases, and contributing to PNALD.

Question 19: What is the recommended timing for consuming protein after resistance exercise to maximize muscle protein synthesis?

6–8 hours post-exercise
Immediately before exercise only
Timing does not matter
Within 30–60 minutes post-exercise (Correct answer)

Correct answer: Within 30–60 minutes post-exercise

Consuming 20–40 g of high-quality protein within 30–60 minutes post-exercise optimizes the anabolic window for muscle repair.

Question 20: In Commission on Dietetic Registration Exam, what is the primary purpose of patient assessment in clinical nutrition?

To determine the patient's insurance coverage
To complete administrative paperwork requirements
To schedule follow-up appointments
To gather comprehensive information about the patient's condition to guide care decisions (Correct answer)

Correct answer: To gather comprehensive information about the patient's condition to guide care decisions

Patient assessment systematically gathers information about the patient's physical, psychological, and social condition, forming the foundation for clinical decision-making and care planning.

Question 21: Which macronutrient should comprise the largest proportion of total calories in the diet of an endurance athlete?

Carbohydrates (55–65%) (Correct answer)
Protein (40–50%)
Fat (50–60%)
Equal distribution of all three

Correct answer: Carbohydrates (55–65%)

Carbohydrates are the primary fuel for endurance performance and should constitute 55–65% of total energy intake.

Question 22: Which electrolyte must be added to parenteral nutrition formulations to prevent its deficiency-related complication of cardiac arrhythmias in patients who are NPO?

Calcium
Potassium (Correct answer)
Sodium
Magnesium

Correct answer: Potassium

Potassium is critical to add to PN formulations because hypokalemia is common in NPO patients and can cause life-threatening cardiac arrhythmias, particularly ventricular fibrillation.

Question 23: Leonard sees an outpatient Registered Dietitian for weight loss counseling. However, he often skips his early morning exercise in favor of sleeping in. This type of behavior that prevents desired change from happening is known as what?

Unfreezing
Restraining force (Correct answer)
Driving force
Resistant behavior

Correct answer: Restraining force

A resistant force is a behavior that prevents desired change from happening, such as overconsuming high calorie foods, which prevents weight loss. Resistant forces should be identified during the unfreezing stage of Lewin's Change Management theory

Question 24: A school-age child with phenylketonuria (PKU) must restrict which amino acid to prevent neurological damage?

Tyrosine
Phenylalanine (Correct answer)
Tryptophan
Leucine

Correct answer: Phenylalanine

PKU is caused by a deficiency of phenylalanine hydroxylase, requiring strict dietary restriction of phenylalanine to prevent accumulation and neurotoxicity.

Question 25: An adolescent female athlete restricts dairy due to lactose intolerance. Which calcium-fortified alternative beverage provides a comparable amount of calcium per serving?

Sports drinks
100% orange juice
Fortified soy milk (Correct answer)
Coconut water

Correct answer: Fortified soy milk

Calcium-fortified soy milk provides approximately 300 mg of calcium per cup, comparable to cow's milk, and also provides protein.

Question 26: In Commission on Dietetic Registration Exam, what is the primary purpose of patient assessment in medical nutrition therapy?

To gather comprehensive information about the patient's condition to guide care decisions (Correct answer)
To complete administrative paperwork requirements
To determine the patient's insurance coverage
To schedule follow-up appointments

Correct answer: To gather comprehensive information about the patient's condition to guide care decisions

Patient assessment systematically gathers information about the patient's physical, psychological, and social condition, forming the foundation for clinical decision-making and care planning.

Question 27: In Commission on Dietetic Registration Exam, what does "standard precautions" in infection control include?

Hand washing only before meals
Wearing gloves only during surgical procedures
Hand hygiene, use of PPE, and safe handling of sharps for all patient contact (Correct answer)
Precautions only for patients with known infections

Correct answer: Hand hygiene, use of PPE, and safe handling of sharps for all patient contact

Standard precautions are infection control practices applied to ALL patient care regardless of infection status, including hand hygiene, appropriate PPE use, safe sharps handling, and respiratory hygiene.

Question 28: What does validity mean in the context of assessment within Commission on Dietetic Registration Exam?

The assessment takes minimal time to complete
The assessment is easy to administer
The assessment measures what it is intended to measure (Correct answer)
The assessment produces consistent results over time

Correct answer: The assessment measures what it is intended to measure

Validity refers to whether an assessment actually measures the construct or skill it claims to measure. A valid assessment produces meaningful and accurate results for its intended purpose.

Question 29: What is the primary goal of patient education in Commission on Dietetic Registration Exam medical nutrition therapy?

To reduce the number of follow-up visits
To empower patients with knowledge to participate in their own care and make informed decisions (Correct answer)
To impress patients with medical terminology
To eliminate the need for professional care

Correct answer: To empower patients with knowledge to participate in their own care and make informed decisions

Patient education empowers individuals with the knowledge and skills to understand their condition, participate actively in their care, make informed decisions, and improve health outcomes.

Question 30: What is the primary role of the Commission on Dietetic Registration (CDR)?

Administering food safety certifications
Conducting research on nutrition trends
Credentialing registered dietitians (RD) and dietetic technicians (DTR) (Correct answer)
Providing accreditation for culinary schools

Correct answer: Credentialing registered dietitians (RD) and dietetic technicians (DTR)

The CDR is responsible for credentialing registered dietitians (RD) and dietetic technicians (DTR) through examinations

Question 31: Prior to menopause, women are less likely to be effected by heart disease. In the study of disease epidemiology, gender is known as a:

fixed determinant (Correct answer)
income determinant
environmental determinant
genetic determinant

Correct answer: fixed determinant

Gender is a fixed determinant of disease epidemiology, as it cannot be changed. Other fixed determinants include race and genetics.

Question 32: Which of the following is a fat-soluble vitamin?

Vitamin C
Vitamin B6
Vitamin A (Correct answer)
Vitamin B12

Correct answer: Vitamin A

Fat soluble vitamins are stored in fat deposits, and therefore are not necessary to consume on a daily basis. Water soluble vitamins can be depleted much more quickly and require regular consumption.

Question 33: Which level of biological organization represents the most complex in Commission on Dietetic Registration Exam nutritional biochemistry?

Tissue
Cell
Ecosystem (Correct answer)
Organ

Correct answer: Ecosystem

The hierarchy from simplest to most complex goes: atom → molecule → cell → tissue → organ → organ system → organism → population → community → ecosystem → biosphere.

Question 34: Childhood obesity intervention programs for children aged 6–11 should focus PRIMARILY on which behavioral strategy?

Weight maintenance while the child grows taller (Correct answer)
Pharmacological treatment as first-line therapy
High-intensity exercise programs only
Strict caloric restriction to promote weight loss

Correct answer: Weight maintenance while the child grows taller

For most obese children, the goal is weight maintenance to allow linear growth to reduce BMI-for-age percentile over time, rather than aggressive weight loss.

Question 35: In Commission on Dietetic Registration Exam, what is the purpose of the scientific method in food science?

To replace professional judgment entirely
To guarantee specific experimental outcomes
To eliminate the need for observation
To provide a systematic approach for investigating questions and testing hypotheses (Correct answer)

Correct answer: To provide a systematic approach for investigating questions and testing hypotheses

The scientific method provides a structured, systematic approach for asking questions, forming hypotheses, designing experiments, collecting data, and drawing evidence-based conclusions.

Question 36: Which formula type is most appropriate for a patient with severe malabsorption and short bowel syndrome?

High-fiber formula
Semi-elemental formula
Elemental (monomeric) formula (Correct answer)
Standard polymeric formula

Correct answer: Elemental (monomeric) formula

Elemental formulas contain nutrients in their simplest absorbable forms (amino acids, monosaccharides, fatty acids), making them ideal for patients with severely compromised digestive and absorptive capacity.

Question 37: A patient receiving continuous enteral nutrition through a PEG tube develops diarrhea. Which intervention should be tried FIRST?

Switch to an elemental formula immediately
Discontinue enteral nutrition and start TPN
Slow the infusion rate and check for infectious causes (Correct answer)
Add a fiber supplement to the formula

Correct answer: Slow the infusion rate and check for infectious causes

The first step is to slow the infusion rate and evaluate for infectious causes (such as C. difficile), medication-related causes, or formula intolerance before changing formula type or route.

Question 38: In Commission on Dietetic Registration Exam, what does pH measure?

The pressure within a container
The temperature of a liquid
The viscosity of a solution
The acidity or alkalinity of a solution on a scale of 0 to 14 (Correct answer)

Correct answer: The acidity or alkalinity of a solution on a scale of 0 to 14

pH measures the hydrogen ion concentration in a solution, indicating its acidity (pH < 7), neutrality (pH = 7), or alkalinity (pH > 7) on a scale from 0 to 14.

Question 39: What is the primary purpose of stakeholder analysis in Commission on Dietetic Registration Exam food service management?

To identify and understand the interests and influence of all parties affected by decisions (Correct answer)
To evaluate employee attendance records
To schedule project timelines
To calculate financial returns on investment

Correct answer: To identify and understand the interests and influence of all parties affected by decisions

Stakeholder analysis identifies all parties who have an interest in or are affected by a project or decision, assessing their level of influence and interest to develop appropriate engagement strategies.

Question 40: Which type of assessment in Commission on Dietetic Registration Exam compares an individual's performance to a predetermined standard?

Norm-referenced assessment
Ipsative assessment
Informal assessment
Criterion-referenced assessment (Correct answer)

Correct answer: Criterion-referenced assessment

Criterion-referenced assessment compares performance against a fixed set of criteria or standards, determining whether specific competencies have been met regardless of how others perform.

Question 41: Which clinical sign indicates INTOLERANCE to enteral nutrition and should prompt evaluation and possible rate reduction?

Serum albumin rising during tube feeding
Abdominal distension, pain, and high gastric residuals consistently above 500 mL (Correct answer)
Gastric residual volume of 150 mL in a critically ill patient
Passing flatus during tube feeding

Correct answer: Abdominal distension, pain, and high gastric residuals consistently above 500 mL

Consistent gastric residuals above 500 mL combined with abdominal distension and pain indicate significant intolerance; ASPEN recommends holding tube feeds and reassessing rather than tolerating persistently high residuals.

Question 42: An athlete reports muscle cramps during prolonged endurance events. Which electrolyte imbalance is MOST commonly implicated?

Sodium deficit (hyponatremia) (Correct answer)
Potassium excess
Calcium deficiency
Magnesium toxicity

Correct answer: Sodium deficit (hyponatremia)

Sodium loss through sweat during prolonged exercise can lead to hyponatremia, contributing to muscle cramping.

Question 43: In Commission on Dietetic Registration Exam, what does "evidence-based practice" mean?

Following only the most recent research studies
Integrating best research evidence with clinical expertise and patient preferences (Correct answer)
Applying the same treatment to all patients regardless of condition
Relying solely on personal clinical experience

Correct answer: Integrating best research evidence with clinical expertise and patient preferences

Evidence-based practice integrates the best available research evidence with clinical expertise and patient values/preferences to guide clinical decisions and optimize outcomes.

Question 44: Caffeine is classified as an ergogenic aid. What is its primary mechanism for enhancing endurance performance?

Increases glycogen storage
Directly increases muscle contraction strength
Blocks adenosine receptors, reducing perception of fatigue (Correct answer)
Enhances fat absorption

Correct answer: Blocks adenosine receptors, reducing perception of fatigue

Caffeine competes with adenosine at its receptors in the brain, reducing the sensation of fatigue and effort during exercise.

Question 45: What is a "control group" in Commission on Dietetic Registration Exam research?

A group that does not receive the experimental treatment, serving as a baseline comparison (Correct answer)
A group of researchers overseeing the study
The group that receives the experimental treatment
The largest group in any experiment

Correct answer: A group that does not receive the experimental treatment, serving as a baseline comparison

The control group does not receive the experimental treatment or intervention, providing a baseline against which the experimental group's results can be compared to determine the effect of the treatment.

Question 46: What is the relationship between theory and practice in Commission on Dietetic Registration Exam professional practice?

Theory provides the foundation and framework that guides effective practical application (Correct answer)
Theory replaces the need for any practical experience
Practice is only important; theory is unnecessary
Theory and practice are completely unrelated

Correct answer: Theory provides the foundation and framework that guides effective practical application

Theory and practice are complementary: theoretical knowledge provides the conceptual framework and understanding that guides effective, evidence-based practical application in professional settings.

Question 47: At approximately what age do iron stores from birth become depleted in full-term infants, increasing the need for dietary iron?

1–2 months
3–4 months
4–6 months (Correct answer)
9–12 months

Correct answer: 4–6 months

Full-term infants' iron stores are generally adequate until 4–6 months, after which dietary iron from complementary foods or supplementation becomes critical.

Question 48: In Commission on Dietetic Registration Exam, why is professional practice knowledge important for professional certification?

It is important only for entry-level positions
It is only required for administrative purposes
It has no practical relevance to daily work
It demonstrates competence and ensures practitioners meet established standards (Correct answer)

Correct answer: It demonstrates competence and ensures practitioners meet established standards

Professional certification in specific knowledge areas demonstrates that practitioners have met established competency standards, ensuring quality of service and public protection.

Question 49: What is the correct order of priority in Commission on Dietetic Registration Exam patient care?

Treatment, Documentation, Assessment
Airway, Breathing, Circulation (ABC) (Correct answer)
Documentation, Assessment, Treatment
Circulation, Airway, Breathing

Correct answer: Airway, Breathing, Circulation (ABC)

Question 50: What is the purpose of documenting patient care in Commission on Dietetic Registration Exam?

To satisfy curiosity about patient conditions
To justify billing charges only
To monitor employee productivity
To create a legal record, ensure continuity of care, and support communication among providers (Correct answer)

Correct answer: To create a legal record, ensure continuity of care, and support communication among providers

Documentation creates a legal record of care provided, supports communication among healthcare team members, ensures continuity of care, and provides data for quality improvement and research.

Question 51: What osmolality range is generally considered safe for peripheral parenteral nutrition (PPN) to avoid thrombophlebitis?

Less than 900 mOsm/L (Correct answer)
Less than 600 mOsm/L
Less than 1500 mOsm/L
Less than 1200 mOsm/L

Correct answer: Less than 900 mOsm/L

PPN solutions should not exceed approximately 900 mOsm/L to minimize the risk of thrombophlebitis and vein irritation when infusing through a peripheral vein.

Question 52: Which vitamin is most critical for bone health in female athletes at risk for the Female Athlete Triad?

Vitamin D (Correct answer)
Vitamin K
Vitamin B12
Vitamin C

Correct answer: Vitamin D

Vitamin D is essential for calcium absorption and bone mineralization, making it critical for athletes at risk of stress fractures.

Question 53: Which of the following medical conditions would require the use of total parenteral nutrition versus enteral nutrition?

Diabetes mellitus
Sepsis
Ischemic bowel disease (Correct answer)
Cardiovascular disease

Correct answer: Ischemic bowel disease

Parenteral nutrition is used to treat patients who cannot eat or have limited digestive powers by providing a liquid mixture of nutrients directly to the bloodstream. Parenteral nutrition may be used if a feeding tube hasn't worked, or if the patient has a condition such as Crohn's disease, cancer, short bowel syndrome, or ischemic bowel disease.

Question 54: What is the format of the CDR nutrition examination?

Essay-based
Practical cooking test
Oral presentation
Multiple-choice computer-based (Correct answer)

Correct answer: Multiple-choice computer-based

The CDR examination is typically computer-based and consists of multiple-choice questions.

Question 55: What is the primary objective of professional practice in Commission on Dietetic Registration Exam?

To limit access to the profession
To replace practical experience entirely
To generate revenue for testing organizations
To ensure competence and proficiency in core professional practice concepts (Correct answer)

Correct answer: To ensure competence and proficiency in core professional practice concepts

The primary objective of professional practice knowledge is to ensure practitioners have the competence and proficiency needed to perform effectively and safely in their professional roles.

Question 56: During a marathon, a runner consumes a 6% carbohydrate sports drink. What is the primary benefit of this concentration compared to plain water?

Maintains blood glucose and delays glycogen depletion (Correct answer)
Faster gastric emptying rate
Reduces sweat rate significantly
Decreases core body temperature

Correct answer: Maintains blood glucose and delays glycogen depletion

A 6% carbohydrate solution provides exogenous glucose to working muscles, helping to spare muscle glycogen and delay fatigue.

Question 57: In Commission on Dietetic Registration Exam, what does pH measure?

The pressure within a container
The acidity or alkalinity of a solution on a scale of 0 to 14 (Correct answer)
The viscosity of a solution
The temperature of a liquid

Correct answer: The acidity or alkalinity of a solution on a scale of 0 to 14

pH measures the hydrogen ion concentration in a solution, indicating its acidity (pH < 7), neutrality (pH = 7), or alkalinity (pH > 7) on a scale from 0 to 14.

Question 58: What is a rubric used for in Commission on Dietetic Registration Exam assessment?

To record attendance data
To schedule assessment dates
To define criteria and performance levels for evaluating work quality (Correct answer)
To calculate statistical averages

Correct answer: To define criteria and performance levels for evaluating work quality

A rubric is a scoring guide that defines specific criteria and describes performance levels for each criterion, providing consistent and transparent evaluation standards.

Question 59: Which resource allocation strategy in Commission on Dietetic Registration Exam food service management focuses on maximizing output with limited resources?

Delegating resource decisions to external consultants
Acquiring unlimited resources regardless of cost
Optimization of available resources through prioritization (Correct answer)
Reducing all activities to minimum levels

Correct answer: Optimization of available resources through prioritization

Resource optimization involves strategically prioritizing and allocating limited resources to maximize output and achieve objectives efficiently, balancing competing demands.

Question 60: In Commission on Dietetic Registration Exam, what is the purpose of a literature review in research methods?

To list all publications by a single author
To survey existing research and identify gaps that the current study addresses (Correct answer)
To determine the budget for the study
To copy findings from other researchers

Correct answer: To survey existing research and identify gaps that the current study addresses

A literature review surveys and synthesizes existing research on a topic, establishing what is already known, identifying gaps or inconsistencies, and providing context and justification for the current study.

Question 61: What is the recommended daily protein intake range for endurance athletes according to current sports nutrition guidelines?

1.2–1.6 g/kg body weight (Correct answer)
2.0–2.5 g/kg body weight
0.6–0.8 g/kg body weight
3.0–3.5 g/kg body weight

Correct answer: 1.2–1.6 g/kg body weight

Endurance athletes typically need 1.2–1.6 g/kg body weight per day to support muscle repair and glycogen synthesis.

Question 62: In Commission on Dietetic Registration Exam, what is the purpose of the scientific method in nutritional biochemistry?

To provide a systematic approach for investigating questions and testing hypotheses (Correct answer)
To guarantee specific experimental outcomes
To replace professional judgment entirely
To eliminate the need for observation

Correct answer: To provide a systematic approach for investigating questions and testing hypotheses

The scientific method provides a structured, systematic approach for asking questions, forming hypotheses, designing experiments, collecting data, and drawing evidence-based conclusions.

Question 63: What is the primary function of the mitochondria in cells relevant to Commission on Dietetic Registration Exam?

To store genetic information
To remove waste products
To produce energy (ATP) through cellular respiration (Correct answer)
To synthesize proteins

Correct answer: To produce energy (ATP) through cellular respiration

Mitochondria are the "powerhouses" of the cell, converting nutrients into ATP (adenosine triphosphate) through cellular respiration, providing the energy needed for cellular functions.

Question 64: Alonso is a researcher studying the effects of saturated fat on heart disease over a period of ten years. Which action would best benefit Alonso's research?

Designing a longitudinal study that follows one group of people over a long period of time (Correct answer)
Creating a cross-sectional study that focuses on a large group of people at one time
Completing a case-study that focuses on one person at a time
Conducting a survey study with 100 participants

Correct answer: Designing a longitudinal study that follows one group of people over a long period of time

Longitudinal studies follow a group of people over a long period of time, which would be the best method for determining how saturated fat affects heart disease. However, it can be difficult to maintain participant engagement over a long period of time.

Question 65: What is the BEST approach for managing a selective eater (picky eater) in a toddler, according to pediatric nutrition guidelines?

Provide structured meals with repeated low-pressure exposure to new foods (Correct answer)
Offer 1–2 preferred foods only to ensure adequate intake
Supplement with meal replacement shakes to cover nutritional gaps
Force the child to eat disliked foods to expand acceptance

Correct answer: Provide structured meals with repeated low-pressure exposure to new foods

Structured meals with repeated, low-pressure exposure and a division of responsibility (parent offers, child decides intake) are evidence-based strategies for picky eating.

Question 66: In Commission on Dietetic Registration Exam, what is the purpose of a needs assessment before designing a training program?

To eliminate the need for evaluation
To reduce the training budget
To select the most convenient training dates
To identify gaps between current and desired performance levels (Correct answer)

Correct answer: To identify gaps between current and desired performance levels

A needs assessment identifies the gap between current knowledge/skills and what is needed, ensuring training programs address actual deficiencies and organizational requirements.

Question 67: Which method of enteral nutrition delivery is most appropriate for a patient who cannot tolerate bolus feedings due to delayed gastric emptying?

Bolus feeding every 4 hours
Continuous infusion over 24 hours (Correct answer)
Cyclic nocturnal feeding
Intermittent gravity drip feeding

Correct answer: Continuous infusion over 24 hours

Continuous infusion delivers formula at a slow, steady rate around the clock, minimizing the volume in the stomach at any given time and reducing risk of aspiration and intolerance in patients with delayed gastric emptying.

Question 68: What is the purpose of documenting patient care in Commission on Dietetic Registration Exam?

To create a legal record, ensure continuity of care, and support communication among providers (Correct answer)
To satisfy curiosity about patient conditions
To justify billing charges only
To monitor employee productivity

Correct answer: To create a legal record, ensure continuity of care, and support communication among providers

Documentation creates a legal record of care provided, supports communication among healthcare team members, ensures continuity of care, and provides data for quality improvement and research.

Question 69: Robert is a director in charge of a food production system. Currently, Robert's kitchen uses a ready prepared system. However, he would like to improve the food quality and menu flexibility of his establishment. Which of the following actions should Robert take?

Robert Should contact his vendors to get better quality and variety foods
Robert Should adapt his kitchen to a commissary food production system for improved consistency
Robert Should switch to a conventional food production system (Correct answer)
Robert Should change to an assembly serve food production system for lower costs

Correct answer: Robert Should switch to a conventional food production system

Conventional food systems are the most common type and typically include food production and the holding of hot and chilled food prior to food service. Conventional food systems have greater menu flexibility and perceived food quality; however, there are higher food costs and labor costs associated with conventional food systems.

Question 70: In Commission on Dietetic Registration Exam, what is the primary purpose of patient assessment in community nutrition?

To complete administrative paperwork requirements
To schedule follow-up appointments
To determine the patient's insurance coverage
To gather comprehensive information about the patient's condition to guide care decisions (Correct answer)

Correct answer: To gather comprehensive information about the patient's condition to guide care decisions

Patient assessment systematically gathers information about the patient's physical, psychological, and social condition, forming the foundation for clinical decision-making and care planning.

Question 71: In Commission on Dietetic Registration Exam, what does "evidence-based practice" mean?

Following only the most recent research studies
Integrating best research evidence with clinical expertise and patient preferences (Correct answer)
Applying the same treatment to all patients regardless of condition
Relying solely on personal clinical experience

Correct answer: Integrating best research evidence with clinical expertise and patient preferences

Evidence-based practice integrates the best available research evidence with clinical expertise and patient values/preferences to guide clinical decisions and optimize outcomes.

Question 72: What is the caloric density of a standard 20% lipid emulsion used in parenteral nutrition?

3.0 kcal/mL
4.5 kcal/mL
1.0 kcal/mL
2.0 kcal/mL (Correct answer)

Correct answer: 2.0 kcal/mL

A 20% lipid emulsion provides 2.0 kcal/mL; the 10% emulsion provides 1.1 kcal/mL and the 30% emulsion provides 3.0 kcal/mL.

Question 73: What is a controlled variable in an experiment related to Commission on Dietetic Registration Exam?

The outcome that is measured
The variable that is intentionally changed
A factor that is kept constant throughout the experiment (Correct answer)
A variable that changes randomly

Correct answer: A factor that is kept constant throughout the experiment

Controlled variables (constants) are factors that are deliberately kept the same throughout an experiment to ensure that any observed changes are due to the independent variable being tested.

Question 74: A patient on home parenteral nutrition develops line sepsis. What is the MOST common causative organism?

Staphylococcus epidermidis (coagulase-negative staphylococci) (Correct answer)
Escherichia coli
Candida albicans
Pseudomonas aeruginosa

Correct answer: Staphylococcus epidermidis (coagulase-negative staphylococci)

Coagulase-negative staphylococci (primarily S. epidermidis) are the most common cause of catheter-related bloodstream infections in home PN patients due to biofilm formation on catheter surfaces.

Question 75: When initiating enteral nutrition in a critically ill patient, what is the preferred delivery site?

Esophageal feeding
Colonic feeding
Duodenal feeding only
Gastric feeding whenever feasible (Correct answer)

Correct answer: Gastric feeding whenever feasible

Gastric feeding is the preferred initial route in most critically ill patients as it is physiologically normal, stimulates gut hormones, and is easier to initiate; post-pyloric feeding is reserved for those with high aspiration risk.

Question 76: Which of the following benefits can be achieved by increasing the scope of practice for Registered Dietitians?

Empowerment of Registered Dietitians
All of the answer choices are correct
Improved timeless of interventions
Decreased healthcare costs (Correct answer)

Correct answer: Decreased healthcare costs

Scope of practice refers to the rights and responsibilities of dietitians (such as ordering laboratory values or vitamins and supplements for patients) that are otherwise restricted to physicians, physician assistants or nurse practitioners.

Question 77: During a nutrition assessment for a patient requiring parenteral nutrition, which laboratory value best reflects acute changes in nutritional status over 1–2 days?

Serum prealbumin/transthyretin (half-life ~2 days) (Correct answer)
Serum transferrin (half-life ~8–10 days)
Serum albumin (half-life ~20 days)
Hemoglobin (half-life ~120 days)

Correct answer: Serum prealbumin/transthyretin (half-life ~2 days)

Prealbumin (transthyretin) has a short half-life of approximately 2 days, making it the most sensitive visceral protein marker for monitoring acute changes in nutritional status and response to nutrition support.

Question 78: What is a key benefit of implementing performance metrics in Commission on Dietetic Registration Exam food service management?

Reducing employee autonomy
Providing measurable data to track progress and inform decision-making (Correct answer)
Replacing strategic planning entirely
Eliminating the need for qualitative feedback

Correct answer: Providing measurable data to track progress and inform decision-making

Performance metrics provide objective, quantifiable data that helps track progress toward goals, identify areas for improvement, and support evidence-based decision-making.

Question 79: What is the primary fuel source for high-intensity anaerobic exercise lasting 10–30 seconds?

Muscle glycogen via glycolysis
Blood glucose
Free fatty acids
Phosphocreatine (PCr) (Correct answer)

Correct answer: Phosphocreatine (PCr)

Phosphocreatine provides rapid ATP resynthesis for very short bursts of maximal-intensity activity.

Question 80: In Commission on Dietetic Registration Exam, what does "standard precautions" in infection control include?

Precautions only for patients with known infections
Hand hygiene, use of PPE, and safe handling of sharps for all patient contact (Correct answer)
Wearing gloves only during surgical procedures
Hand washing only before meals

Correct answer: Hand hygiene, use of PPE, and safe handling of sharps for all patient contact

Question 81: In Commission on Dietetic Registration Exam, what is homeostasis?

The body's ability to maintain a stable internal environment despite external changes (Correct answer)
A type of immune response
A rapid increase in body temperature
The process of cell division

Correct answer: The body's ability to maintain a stable internal environment despite external changes

Homeostasis is the process by which biological systems maintain internal stability and balance (temperature, pH, glucose levels, etc.) while adjusting to changing external conditions.

Question 82: What does Kirkpatrick's Level 2 evaluation measure in Commission on Dietetic Registration Exam training?

Behavior — changes in on-the-job performance
Results — organizational impact of the training
Reaction — how participants felt about the training
Learning — the degree to which participants acquired knowledge and skills (Correct answer)

Correct answer: Learning — the degree to which participants acquired knowledge and skills

Kirkpatrick's Level 2 (Learning) measures the degree to which participants acquired the intended knowledge, skills, attitudes, and confidence based on their participation in the training.

Question 83: A collegiate swimmer complains of fatigue and low ferritin levels. This presentation is MOST consistent with which condition common in endurance athletes?

Sports anemia (dilutional pseudoanemia) (Correct answer)
Iron deficiency anemia
Vitamin B12 deficiency anemia
Aplastic anemia

Correct answer: Sports anemia (dilutional pseudoanemia)

Sports anemia is a benign dilutional effect of plasma volume expansion that can lower hemoglobin concentration without true iron deficiency.

Question 84: What is the difference between qualitative and quantitative research in Commission on Dietetic Registration Exam?

There is no meaningful difference between them
Quantitative cannot be used in social sciences
Qualitative explores experiences and meanings; quantitative measures and counts numerical data (Correct answer)
Qualitative is always more rigorous than quantitative

Correct answer: Qualitative explores experiences and meanings; quantitative measures and counts numerical data

Qualitative research explores experiences, perceptions, and meanings through methods like interviews and observation. Quantitative research measures variables numerically through surveys, experiments, and statistical analysis.

Question 85: In Commission on Dietetic Registration Exam, what role does continuing education play in professional practice?

To increase testing frequency for compliance purposes
To prevent professionals from advancing in their careers
To replace initial certification requirements
To keep professionals current with evolving standards, technologies, and best practices (Correct answer)

Correct answer: To keep professionals current with evolving standards, technologies, and best practices

Continuing education ensures professionals stay current with new developments, evolving standards, and emerging best practices in their field, maintaining competence throughout their careers.

Question 86: What are the benefits of becoming a registered dietitian (RD) or dietetic technician, registered (DTR) through the CDR examination?

Mastery of architectural design
Expertise in marine biology
Career opportunities and professional credibility (Correct answer)
Enhanced knowledge of astronomy

Correct answer: Career opportunities and professional credibility

Becoming registered through the CDR examination demonstrates expertise and competency in dietetics, enhancing career opportunities and credibility.

Question 87: Which ergogenic aid has the strongest evidence base for improving high-intensity, short-duration exercise performance?

Creatine monohydrate (Correct answer)
HMB (beta-hydroxy-beta-methylbutyrate)
Glutamine
Branched-chain amino acids (BCAAs)

Correct answer: Creatine monohydrate

Creatine monohydrate has the most robust evidence for enhancing power output and lean mass in high-intensity, short-duration activities.

Question 88: Which learning principle is most important for adult learners in Commission on Dietetic Registration Exam education and counseling?

Adults prefer memorization of abstract theories
Adults require constant supervision during learning
Adults learn best when content is immediately applicable to real situations (Correct answer)
Adults learn best in competitive environments only

Correct answer: Adults learn best when content is immediately applicable to real situations

Adult learning theory (andragogy) emphasizes that adults are motivated to learn when they can see immediate practical application, drawing on their experience and self-direction.

Question 89: What is the recommended protein goal (g/kg/day) for a critically ill adult patient without renal failure receiving nutrition support?

0.8–1.0 g/kg/day
1.2–2.0 g/kg/day (Correct answer)
2.5–3.5 g/kg/day
0.4–0.6 g/kg/day

Correct answer: 1.2–2.0 g/kg/day

ASPEN and SCCM guidelines recommend 1.2–2.0 g/kg/day of protein for critically ill adults to support wound healing, immune function, and minimize lean muscle loss during hypermetabolism.

Question 90: A TPN solution containing dextrose, amino acids, and lipids in a single bag is called:

Standard dual-chamber bag
Hypertonic dextrose solution
Piggyback solution
Total nutrient admixture (TNA) or 3-in-1 solution (Correct answer)

Correct answer: Total nutrient admixture (TNA) or 3-in-1 solution

A total nutrient admixture (TNA), also called a 3-in-1 or all-in-one solution, combines dextrose, amino acids, and lipid emulsion in a single bag for convenient administration.

Question 91: Which access device is preferred for long-term home parenteral nutrition (expected >3 months)?

Non-tunneled central venous catheter (CVC)
Peripheral IV catheter
Tunneled cuffed central venous catheter (e.g., Hickman) or implanted port (Correct answer)
Nasogastric tube with PN delivery

Correct answer: Tunneled cuffed central venous catheter (e.g., Hickman) or implanted port

Tunneled catheters (e.g., Hickman, Broviac) and implanted ports are preferred for long-term PN because the subcutaneous tunnel and cuff reduce infection risk and provide secure long-term access.

Question 92: Which domain is covered in the CDR nutrition examination?

Automotive mechanics
Nutrition science and clinical nutrition (Correct answer)
Computer programming
Engineering principles

Correct answer: Nutrition science and clinical nutrition

The CDR examination assesses knowledge in areas related to nutrition science and clinical nutrition among other domains.

Question 93: Which condition is characterized by failure to thrive in infants and is caused by inadequate intake of calories and nutrients, often related to feeding difficulties or poverty?

Kwashiorkor
Celiac disease
Non-organic failure to thrive (NOFTT) (Correct answer)
Marasmus

Correct answer: Non-organic failure to thrive (NOFTT)

Non-organic failure to thrive results from inadequate caloric intake due to psychosocial factors, feeding problems, or poverty rather than a medical cause.

Question 94: A sports dietitian is counseling a high school cross-country runner who restricts food to improve performance. Which screening tool is MOST appropriate to assess disordered eating risk?

Malnutrition Universal Screening Tool (MUST)
LEAF-Q (Low Energy Availability in Females Questionnaire) (Correct answer)
Mini Nutritional Assessment (MNA)
SGA (Subjective Global Assessment)

Correct answer: LEAF-Q (Low Energy Availability in Females Questionnaire)

The LEAF-Q was specifically designed and validated to identify low energy availability and disordered eating risk in female athletes.

Question 95: In Commission on Dietetic Registration Exam, what is the primary function of strategic planning in food service management?

To conduct annual performance reviews
To set long-term goals and determine the best approach to achieve them (Correct answer)
To handle day-to-day operational tasks
To manage the organization's social media presence

Correct answer: To set long-term goals and determine the best approach to achieve them

Strategic planning involves defining the organization's direction, making decisions on allocating resources, and establishing priorities to achieve long-term objectives.

Question 96: Which level of biological organization represents the most complex in Commission on Dietetic Registration Exam food science?

Cell
Tissue
Ecosystem (Correct answer)
Organ

Correct answer: Ecosystem

The hierarchy from simplest to most complex goes: atom → molecule → cell → tissue → organ → organ system → organism → population → community → ecosystem → biosphere.

Question 97: Which management approach in Commission on Dietetic Registration Exam emphasizes continuous improvement through small, incremental changes?

Complete organizational restructuring
Laissez-faire management
Crisis management approach
Kaizen methodology (Correct answer)

Correct answer: Kaizen methodology

Kaizen is a Japanese management philosophy that focuses on continuous improvement through small, incremental changes involving all employees, leading to sustained improvement over time.

Question 98: In Commission on Dietetic Registration Exam, what does "standard precautions" in infection control include?

Wearing gloves only during surgical procedures
Hand hygiene, use of PPE, and safe handling of sharps for all patient contact (Correct answer)
Hand washing only before meals
Precautions only for patients with known infections

Correct answer: Hand hygiene, use of PPE, and safe handling of sharps for all patient contact

Question 99: Which vitamin is routinely supplemented in exclusively breastfed infants in the US because human milk alone provides insufficient amounts?

Vitamin A
Vitamin D (Correct answer)
Vitamin C
Vitamin E

Correct answer: Vitamin D

The AAP recommends 400 IU/day of vitamin D supplementation starting within the first few days of life for exclusively breastfed infants.

Question 100: What is the purpose of competency-based training in Commission on Dietetic Registration Exam?

To provide entertainment during work hours
To cover as much content as possible in limited time
To replace all classroom instruction with reading
To ensure learners can demonstrate specific skills before advancing (Correct answer)

Correct answer: To ensure learners can demonstrate specific skills before advancing

Competency-based training focuses on learners demonstrating mastery of specific, defined competencies before progressing, ensuring they can actually perform required skills rather than just completing seat time.

Question 101: A 9-month-old infant is given honey as a home remedy. Which serious foodborne illness risk is associated with honey in infants under 12 months?

Infant botulism (Correct answer)
E. coli O157:H7 infection
Salmonellosis
Listeriosis

Correct answer: Infant botulism

Clostridium botulinum spores can colonize the immature infant gut and produce toxin causing infant botulism, a potentially fatal illness.

Question 102: Which factor most affects knowledge retention in Commission on Dietetic Registration Exam education and counseling?

The physical appearance of training materials
The length of the training manual
Regular practice and reinforcement of learned concepts (Correct answer)
The instructor's academic credentials

Correct answer: Regular practice and reinforcement of learned concepts

Research consistently shows that spaced practice and reinforcement significantly improve long-term retention. Without review and application, most new information is forgotten within days.

Question 103: Which amino acid becomes conditionally essential during severe metabolic stress such as critical illness or major surgery?

Alanine
Serine
Aspartate
Glutamine (Correct answer)

Correct answer: Glutamine

Glutamine becomes conditionally essential during critical illness because demand exceeds endogenous production; it serves as the primary fuel for enterocytes and immune cells and helps maintain gut barrier integrity.

Question 104: What is a controlled variable in an experiment related to Commission on Dietetic Registration Exam?

A factor that is kept constant throughout the experiment (Correct answer)
The variable that is intentionally changed
A variable that changes randomly
The outcome that is measured

Correct answer: A factor that is kept constant throughout the experiment

Controlled variables (constants) are factors that are deliberately kept the same throughout an experiment to ensure that any observed changes are due to the independent variable being tested.

Question 105: _____ is the continuation of health care services from hospital admission to post-discharge care.

Finding community resources
Assessment of risk
Continuity of care (Correct answer)
Coordination of care

Correct answer: Continuity of care

In order to provide continuity of care, the entire health care team must be involved in the discharge planning process, including dietitians. This includes identifying potential problems, assessing risk, setting goals, planning, implementation, coordination of care, and evaluating effectiveness.

Question 106: A 2-year-old child has a BMI-for-age at the 97th percentile. According to CDC growth charts, this is classified as:

Healthy weight
Obesity (Correct answer)
Severe obesity
Overweight

Correct answer: Obesity

A BMI-for-age at or above the 95th percentile in children aged 2–19 years is classified as obesity.

Question 107: Which dietary pattern is associated with reduced risk of childhood obesity and is consistent with the Dietary Guidelines for Americans?

Protein-only diet
DASH-style diet rich in fruits, vegetables, whole grains, and low-fat dairy (Correct answer)
High-sugar, low-fiber diet
High-fat, low-carbohydrate diet

Correct answer: DASH-style diet rich in fruits, vegetables, whole grains, and low-fat dairy

A DASH-style dietary pattern emphasizes nutrient-dense foods, limits added sugars and sodium, and is consistent with childhood obesity prevention guidelines.

Question 108: How often can candidates retake the CDR nutrition examination if they do not pass?

Limited number of times within a certain timeframe (Correct answer)
Twice
Once
Thrice

Correct answer: Limited number of times within a certain timeframe

Candidates are allowed to retake the examination a limited number of times within a specific timeframe if they do not pass

Question 109: In Commission on Dietetic Registration Exam, what does the PDCA cycle stand for?

Prioritize, Delegate, Communicate, Approve
Prepare, Develop, Control, Assess
Process, Design, Create, Analyze
Plan, Do, Check, Act (Correct answer)

Correct answer: Plan, Do, Check, Act

The PDCA cycle (Plan-Do-Check-Act) is a continuous improvement framework where you plan the change, implement it, check the results, and act on what you learned to refine the process.

Question 110: Dehydration can extend the shelf life of certain food products. How is dehydration achieved?

Air circulation
All of the answer choices are correct
Low humidity (Correct answer)
Low, steady heat

Correct answer: Low humidity

Dehydration is accomplished through a combination of low steady heat, air circulation, and low humidity. This eliminates moisture so that bacteria, mold, and yeast cannot survive.

Question 111: Which type of dietary fat is most beneficial for reducing exercise-induced inflammation in athletes?

Medium-chain triglycerides
Saturated fatty acids
Omega-3 polyunsaturated fatty acids (Correct answer)
Trans fatty acids

Correct answer: Omega-3 polyunsaturated fatty acids

Omega-3 fatty acids (EPA and DHA) have anti-inflammatory properties that may help reduce muscle soreness and support recovery.

Question 112: A patient on total parenteral nutrition (TPN) develops refeeding syndrome. Which electrolyte abnormality is the hallmark of this condition?

Hypercalcemia
Hyperkalemia
Hypophosphatemia (Correct answer)
Hypernatremia

Correct answer: Hypophosphatemia

Hypophosphatemia is the hallmark of refeeding syndrome; rapid carbohydrate administration shifts phosphorus intracellularly for ATP synthesis, causing dangerous drops in serum phosphorus.

Question 113: Which complication is most commonly associated with long-term parenteral nutrition use?

Metabolic alkalosis
Parenteral nutrition-associated liver disease (PNALD) (Correct answer)
Respiratory alkalosis
Iron deficiency anemia

Correct answer: Parenteral nutrition-associated liver disease (PNALD)

Parenteral nutrition-associated liver disease (PNALD) is the most common serious long-term complication of PN, characterized by cholestasis, steatosis, and potentially progressing to cirrhosis.

Question 114: What is the difference between reliability and validity in Commission on Dietetic Registration Exam assessment?

Reliability refers to consistency of results; validity refers to accuracy of measurement (Correct answer)
They are synonymous terms with identical meanings
Reliability applies only to written tests; validity applies only to practical tests
Reliability is about speed; validity is about cost

Correct answer: Reliability refers to consistency of results; validity refers to accuracy of measurement

Reliability means the assessment produces consistent, stable results across repeated administrations. Validity means the assessment accurately measures what it is intended to measure. Both are needed for quality assessment.

Question 115: In Commission on Dietetic Registration Exam, what does "evidence-based practice" mean?

Following only the most recent research studies
Integrating best research evidence with clinical expertise and patient preferences (Correct answer)
Relying solely on personal clinical experience
Applying the same treatment to all patients regardless of condition

Correct answer: Integrating best research evidence with clinical expertise and patient preferences

Evidence-based practice integrates the best available research evidence with clinical expertise and patient values/preferences to guide clinical decisions and optimize outcomes.

Question 116: What is the primary function of the mitochondria in cells relevant to Commission on Dietetic Registration Exam?

To store genetic information
To produce energy (ATP) through cellular respiration (Correct answer)
To remove waste products
To synthesize proteins

Correct answer: To produce energy (ATP) through cellular respiration

Mitochondria are the "powerhouses" of the cell, converting nutrients into ATP (adenosine triphosphate) through cellular respiration, providing the energy needed for cellular functions.

Question 117: What is a focus of clinical nutrition knowledge assessed in the CDR examination?

Mechanical engineering
Modern art history
Disease-specific nutrition interventions (Correct answer)
Agricultural practices

Correct answer: Disease-specific nutrition interventions

Clinical nutrition knowledge includes disease-specific nutrition interventions and medical nutrition therapy.

Question 118: Which carbohydrate intake strategy is recommended for athletes performing high-intensity exercise lasting more than 90 minutes?

Protein-only fueling
Fat loading
Carbohydrate restriction
Carbohydrate loading (supercompensation) (Correct answer)

Correct answer: Carbohydrate loading (supercompensation)

Carbohydrate loading maximizes muscle glycogen stores to delay fatigue during prolonged high-intensity exercise.

Question 119: In Commission on Dietetic Registration Exam, what is homeostasis?

The body's ability to maintain a stable internal environment despite external changes (Correct answer)
The process of cell division
A rapid increase in body temperature
A type of immune response

Correct answer: The body's ability to maintain a stable internal environment despite external changes

Homeostasis is the process by which biological systems maintain internal stability and balance (temperature, pH, glucose levels, etc.) while adjusting to changing external conditions.

Question 120: A registered dietitian is assessing a 5-year-old with suspected celiac disease. Which nutrient deficiency is MOST commonly associated with untreated celiac disease?

Vitamin C
Potassium
Vitamin B6
Iron (Correct answer)

Correct answer: Iron

Celiac disease causes villous atrophy in the proximal small intestine, impairing iron absorption and frequently leading to iron deficiency anemia.

Question 121: What does the passing score for the CDR nutrition examination depend on?

Candidate's height and weight
Number of dietetic internships completed
Difficulty level of the examination (Correct answer)
Number of questions answered

Correct answer: Difficulty level of the examination

The passing score is determined based on the difficulty of the examination and is subject to periodic review by the CDR.

Question 122: What is the primary nutrition concern for exclusively formula-fed infants that breastfed infants are less susceptible to?

Calcium deficiency
Vitamin K deficiency
Vitamin D deficiency
Overfeeding and obesity risk due to bottle-feeding dynamics (Correct answer)

Correct answer: Overfeeding and obesity risk due to bottle-feeding dynamics

Bottle-feeding bypasses infant satiety cues, as caregivers may encourage finishing the bottle, increasing the risk of overfeeding and early obesity.

Question 123: What is the primary goal of patient education in Commission on Dietetic Registration Exam clinical nutrition?

To reduce the number of follow-up visits
To eliminate the need for professional care
To impress patients with medical terminology
To empower patients with knowledge to participate in their own care and make informed decisions (Correct answer)

Correct answer: To empower patients with knowledge to participate in their own care and make informed decisions

Patient education empowers individuals with the knowledge and skills to understand their condition, participate actively in their care, make informed decisions, and improve health outcomes.

Question 124: What is the primary indication for using a nasojejunal (NJ) tube instead of a nasogastric (NG) tube?

Patient preference for comfort
Need for long-term enteral access
High risk of aspiration due to gastroparesis or delayed gastric emptying (Correct answer)
Inability to tolerate lipid-containing formulas

Correct answer: High risk of aspiration due to gastroparesis or delayed gastric emptying

NJ tubes bypass the stomach and deliver formula directly into the jejunum, significantly reducing aspiration risk in patients with gastroparesis, gastroesophageal reflux, or impaired gastric motility.

Question 125: According to the American Academy of Pediatrics (AAP), at what age should solid foods be introduced to a healthy, full-term infant?

Around 6 months (Correct answer)
9–10 months
4–5 months
2–3 months

Correct answer: Around 6 months

The AAP recommends exclusive breastfeeding for approximately 6 months, at which point solid foods can be introduced alongside continued breastfeeding.

CDR Registration Examination for Dietitians (RD Exam)

The CDR Registration Examination for Dietitians is a computer-adaptive test that assesses entry-level competency in nutrition science, clinical nutrition care, food and nutrition program management, and foodservice systems for candidates seeking the Registered Dietitian (RD/RDN) credential.

Questions

35 min

Time Limit

70%

To Pass

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Exam Rules

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No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
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