Multiple Choice

1. When consumed in excess, water-soluble vitamins are most often

A. stored in the liver.

B. excreted in the urine.

C. excreted in the feces.

D. stored in body fat.

2. B vitamins share a role as ________ in energy production.

A. coenzymes

B. enzymes

C. oxidants

D. metabolites

3. Many water-soluble vitamins can be lost or destroyed by exposure to

A. heat, light, and cold.

B. light, cold, and loud noises.

C. darkness, cold, and air.

D. heat, light, and air.

4. Some research has supported the assertion that B vitamins may reduce the risk of

A. heart disease.

B. diabetes.

C. loss of cognitive function.

D. A and C

5. Sandy was cooking beans for dinner and heard they cook faster if baking soda is added to the water. Is adding baking soda a good idea?

A. Yes, it protects the vitamins in the food from being destroyed by the heat.

B. No, it destroys the thiamin in the beans.

C. Yes, it adds folate to the foods.

D. No, it inactivates the vitamin C present.

6. An advanced form of thiamin deficiency seen in alcoholics is

A. Wernicke-Korsokoff syndrome.

B. scurvy.

C. pellagra.

D. pernicious anemia.

7. All of the following are true about thiamin except

A. a deficiency is called beriberi.

B. polyneuritis is a symptom of an excessive intake of thiamin.

C. it was the first B vitamin to be discovered.

D. lean pork is the most nutrient-dense source of naturally occurring thiamin.

8. Packaging milk in cardboard containers is a way to prevent destruction of which vitamin by ultraviolet light?

A. thiamin

B. vitamin C

C. niacin

D. riboflavin

9. Which B vitamin is part of NAD+, which carries the H+ to the electron transport chain?

A. thiamin

B. riboflavin

C. niacin

D. biotin

10. Which of the following is converted to niacin when needed?

A. tryptophan

B. methionine

C. lysine

D. phenylalanine