Chapter 10 Nut
Which of the following is a feature of vitamins? A. Many serve in the role of enzyme inhibitors B. Structurally, many are found linked together C. Several may be oxidized to yield 4 kcalories per gram D. The quantities present in foods are measured in micrograms or milligrams
D
Which of the following is a property of niacin in nutrition? A. It is susceptible to destruction in foods exposed to light B. It participates primarily in reactions involving amino acids C. It is soluble in both water and lipids depending upon its chemical form D. It can be synthesized in the body from the essential amino acid tryptophan
D
Approximately what percentage of alcoholics exhibit thiamin deficiency? A. 20 B. 40 C. 60 D. 80
80
A low-protein diet in which corn is a principal food has been found to cause a deficiency of what vitamin? A. Niacin B. Thiamin C. Vitamin C D. Vitamin B12
A
Which of the following nutrients functions to prevent the appearance of a bilateral, symmetrical dermatitis, primarily on areas exposed to the sun? A. Niacin B. Choline C. Inositol D. Riboflavin
A
In what capacity does vitamin C function? A. Coenzyme for energy release B. Cofactor in collagen formation C. Cofactor with calcium in blood coagulation D. Coenzyme in the formation of red blood cells
B
Research has shown that the risk for neural tube defects is lowered by taking supplements of A. niacin. B. folate. C. vitamin C. D. vitamin B12.
B
The signs and symptoms of riboflavin deficiency are known collectively as A. pellagra. B. antiflavonosis. C. ariboflavinosis. D. flavin adenine dinucleosis.
B
What is meant by the bioavailability of a vitamin in food? A. The total amount available from plant and animal food B. The amount absorbed and subsequently used by the body C. The amount that escapes destruction from food processing D. The number of different chemical forms of the same vitamin
B
What is the function of intrinsic factor in vitamin B12 absorption? A. It catalyzes release of the vitamin from its protein-bound form B. It attaches to the vitamin, thereby allowing absorption from the intestines C. It acts as a storage protein for the vitamin within the intestinal epithelial cells D. It acts as a cofactor for mucosal enzymes involved in absorption of the vitamin
B
What vitamin deficiency disease appeared in people who had subsisted on a diet high in corn and low in protein? A. Scurvy B. Pellagra C. Wet beriberi D. Pernicious anemia
B
When thiamin is consumed in excess of needs, how does the body treat the excess? A. Not absorbed B. Excreted primarily in the urine C. Excreted primarily in the feces D. Stored in liver, bone, and adipose tissue
B
Which of the following vitamins is synthesized by intestinal bacteria? A. Folate B. Biotin C. Cyanocobalamin D. Pantothenic acid
B
Which of the following vitamins would be removed in the production of skim milk? A. Thiamin B. Vitamin A C. Riboflavin D. Vitamin B12
B
A person who shuns dairy and spends most of her time indoors would likely benefit from a supplement of A. vitamin A. B. vitamin B6. C. vitamin C. D. vitamin D.
D
What is a chief function of the B vitamins? A. Antioxidation B. Anticoagulation C. Antibody stabilization D. Coenzyme participation
D
Which of the following explains why B vitamin deficiencies lead to lack of energy? A. B vitamins are a source of kilocalories B. Absorption of carbohydrates and fats is decreased C. Oxygen for energy metabolism cannot be transported to the cells D. Coenzymes needed for energy metabolism are produced in insufficient amounts
D
Which of the following food groups is a rich source of vitamin C? A. Milk group B. Meat group C. Fruit group D. Bread-cereal group
C
Which of the following would be a very good source of vitamin C for the lacto-ovo-vegetarian? A. Milk B. Eggs C. Broccoli D. Whole-grain bread
C
Cooking a food in liberal amounts of water is least likely to affect the vitamin content of A. folate. B. thiamin. C. vitamin A. D. riboflavin.
c