Micronutrients and Deficiencies Flashcards
6 cards from real Clinical Nutritionist CCN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Micronutrients and Deficiencies flashcards as text
What is the primary form of folate used in cell metabolism after conversion from dietary sources?
Answer: 5-methyltetrahydrofolate (5-MTHF)
Dietary folate and folic acid supplements are converted to 5-methyltetrahydrofolate, the primary circulating and active coenzyme form involved in one-carbon transfer reactions.
Which mineral is a critical component of hemoglobin and is also found in myoglobin and cytochromes?
Answer: Iron
Iron is the central atom in the heme group of hemoglobin, myoglobin, and cytochromes, enabling oxygen transport, storage, and electron transfer.
Pellagra, caused by niacin deficiency, is classically described by the '4 Ds.' Which of the following is NOT one of them?
Answer: Dyslipidemia
The classic presentation of pellagra is described by the 4 Ds: Dermatitis, Diarrhea, Dementia, and Death; dyslipidemia is not part of this syndrome.
Which form of magnesium supplementation has the highest bioavailability?
Answer: Magnesium glycinate or citrate
Magnesium glycinate and citrate forms are chelated or organic salts with significantly higher intestinal absorption compared to inorganic forms like magnesium oxide.
Beriberi, caused by thiamine deficiency, has two main forms. Which type is characterized by cardiovascular symptoms and edema?
Answer: Wet beriberi
Wet beriberi involves high-output cardiac failure, cardiomegaly, and peripheral edema due to impaired thiamine-dependent energy production in cardiac muscle.
Which mineral acts as a cofactor for superoxide dismutase (SOD) and is involved in iron metabolism and collagen cross-linking?
Answer: Copper
Copper is required for ceruloplasmin, lysyl oxidase (collagen cross-linking), and copper-zinc superoxide dismutase, playing critical roles in antioxidant defense and connective tissue integrity.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- cncb.org — Renewal, test delivery, eligibility, passing score, score validity, fees, time limit · verified Oct 2026