CCBMA Nutrition and Diet Therapy 3

Question 1

Which vitamin deficiency causes scurvy, characterized by bleeding gums and poor wound healing?

Accepted Answer

Vitamin C

Answer

Vitamin C (ascorbic acid) deficiency causes scurvy because ascorbic acid is required for collagen synthesis, which maintains blood vessel and tissue integrity.

Question 2

A patient following a strict vegan diet is most at risk for deficiency in which vitamin?

Accepted Answer

Vitamin B12

Answer

Vitamin B12 is found almost exclusively in animal products; vegans must supplement or consume B12-fortified foods to prevent deficiency and pernicious anemia.

Question 3

Which condition is most associated with deficiency of Vitamin B1 (thiamine)?

Accepted Answer

Beriberi

Answer

Beriberi results from thiamine (Vitamin B1) deficiency and affects the nervous and cardiovascular systems; it is common with diets based on polished white rice.

Question 4

A patient with phenylketonuria (PKU) must restrict dietary intake of which substance?

Accepted Answer

Phenylalanine

Answer

PKU is an inherited metabolic disorder in which phenylalanine cannot be metabolized, so dietary restriction of phenylalanine prevents toxic accumulation and neurological damage.

Question 5

Which term describes the recommended daily nutrient intake level sufficient to meet the needs of 97–98% of healthy individuals in a given age and gender group?

Accepted Answer

Recommended Dietary Allowance (RDA)

Answer

The RDA is set at 2 standard deviations above the EAR and is designed to cover the nutrient needs of 97–98% of healthy people in a specific group.

CCBMA - California Certifying Board for Medical Assistants Practice Test

CCBMA - California Certifying Board for Medical Assistants Practice Test

CCBMA Nutrition and Diet Therapy 3