ACBN Nutritionist MCQ 3

Question 1

Which vitamin acts as a coenzyme in transamination reactions involving amino acid metabolism?

Accepted Answer

Vitamin B6 (pyridoxine)

Answer

Pyridoxal phosphate (PLP), the active form of vitamin B6, is the essential coenzyme for all transamination reactions.

Question 2

A client with chronic kidney disease should restrict intake of which mineral to prevent hyperkalemia?

Accepted Answer

Potassium

Answer

Impaired kidneys cannot excrete potassium efficiently, so dietary restriction is necessary to prevent dangerous hyperkalemia.

Question 3

What glycemic index range classifies a food as 'low GI'?

Accepted Answer

0–55

Answer

Foods with a glycemic index of 55 or below are classified as low GI, producing a slower rise in blood glucose.

Question 4

Which form of iron is more bioavailable and found exclusively in animal foods?

Accepted Answer

Heme iron

Answer

Heme iron, derived from hemoglobin and myoglobin in animal tissues, is absorbed at a rate of 15–35%, far higher than non-heme iron.

Question 5

During pregnancy, which neural tube defect is most directly associated with inadequate folate intake?

Accepted Answer

Anencephaly or spina bifida

Answer

Inadequate folate in early pregnancy increases the risk of both anencephaly and spina bifida, the two primary neural tube defects.

ACBN - Nutritionist Exam Practice Test