Clinical Nutritionist CCN Micronutrients and Deficiencies 3

Question 1

What is the primary form of folate used in cell metabolism after conversion from dietary sources?

Accepted Answer

5-methyltetrahydrofolate (5-MTHF)

Answer

Dietary folate and folic acid supplements are converted to 5-methyltetrahydrofolate, the primary circulating and active coenzyme form involved in one-carbon transfer reactions.

Question 2

Which mineral is a critical component of hemoglobin and is also found in myoglobin and cytochromes?

Accepted Answer

Iron

Answer

Iron is the central atom in the heme group of hemoglobin, myoglobin, and cytochromes, enabling oxygen transport, storage, and electron transfer.

Question 3

Pellagra, caused by niacin deficiency, is classically described by the '4 Ds.' Which of the following is NOT one of them?

Accepted Answer

Dyslipidemia

Answer

The classic presentation of pellagra is described by the 4 Ds: Dermatitis, Diarrhea, Dementia, and Death; dyslipidemia is not part of this syndrome.

Question 4

Which form of magnesium supplementation has the highest bioavailability?

Accepted Answer

Magnesium glycinate or citrate

Answer

Magnesium glycinate and citrate forms are chelated or organic salts with significantly higher intestinal absorption compared to inorganic forms like magnesium oxide.

Question 5

Beriberi, caused by thiamine deficiency, has two main forms. Which type is characterized by cardiovascular symptoms and edema?

Accepted Answer

Wet beriberi

Answer

Wet beriberi involves high-output cardiac failure, cardiomegaly, and peripheral edema due to impaired thiamine-dependent energy production in cardiac muscle.

Clinical Nutritionist CCN Practice Test

Clinical Nutritionist CCN Practice Test

Clinical Nutritionist CCN Micronutrients and Deficiencies 3