31. The disease associated with niacin deficiency is

a. anemia.

b. cheilosis.

c. pellagra.

d. beriberi.

32. The amino acid that can be converted to niacin in the body is

a. leucine.

b. phenylalanine.

c. tryptophan.

d. valine.

33. A good food source of niacin is

a. a banana.

b. a tomato.

c. beef.

d. oatmeal.

34. The vitamin most closely associated with protein metabolism is

a. thiamin.

b. pyridoxine.

c. folic acid.

d. choline.

35. Which of the following diets can help ensure adequate and balanced vitamin intake?

a. a high-calorie diet composed of mainly fruits and vegetables

b. a high-protein diet concentrating on red meat and fish

c. a varied diet composed of all food groups eaten in controlled portions

d. a varied diet with a higher emphasis on grains and fish

36. The person most at risk for vitamin D deficiency is a

a. 12-year-old girl who plays soccer at the local playground twice a week.

b. 28-year-old mother who breastfeeds her 5-month-old infant and takes a daily stroll in the neighborhood.

c. 62-year-old woman who lives in a cold climate and rarely goes outdoors.

d. 42-year-old man who plays golf once a week.

37. The best food source of folic acid is

a. grapefruit.

b. chicken.

c. cheese.

d. broccoli.

38. A folic acid deficiency induces a form of anemia called _____ anemia.

a. microcytic

b. megaloblastic

c. pernicious

d. aplastic

39. The B vitamin predominantly found in foods of animal origin is

a. pantothenic acid.

b. niacin.

c. thiamin.

d. cobalamin.

40. Vitamin C deficiency is associated with

a. scurvy.

b. beriberi.

c. pernicious anemia.

d. megaloblastic anemia.