11) What is the primary symptom of niacin toxicity?

A) dizziness

B) diarrhea

C) fatigue

D) flushing

12) What is transamination?

A) a deficiency of vitamin B6

B) a symptom of niacin toxicity

C) a key process in the creation of nonessential amino acids

D) vitamin deficiency resulting from inadequate protein intake

13) Pellagra is the deficiency disease associated with

A) folate.

B) niacin.

C) thiamin.

D) riboflavin.

14) Pellagra was first seen in populations where the dietary staple was

A) white rice.

B) unpasteurized milk.

C) corn.

D) wheat.

15) Good sources of riboflavin include

A) milk, meats, and green vegetables.

B) refined grains and pork.

C) citrus fruits and berries.

D) potatoes, carrots, and bananas.

16) The primary sources of folate in the American diet are

A) milk and dairy products.

B) fresh fruits and vegetables.

C) meat, fish, and poultry.

D) enriched ready-to-eat cereals, bread, and grain products.

17) Which of the following explains why folate is critical to the health of a newly conceived embryo?

A) Folate is needed for proper cell division.

B) Folate is essential for maintaining proper fluid balance.

C) Folate regulates bone formation.

D) Folate is essential for heart function.

18) Folate deficiency during pregnancy is associated with

A) Down’s syndrome.

B) gestational diabetes.

C) neural tube defects.

D) pellagra.

19) A toxicity of folate can disguise a true deficiency of which nutrient, resulting in nerve damage?

A) niacin

B) vitamin B6

C) iron

D) vitamin B12

20) Vitamin B12 is essential for the proper functioning of which type of cells?

A) epithelial (skin)

B) nerve

C) gastric (stomach)

D) hepatic (liver)