NUTR 214 - Chapter 7 Self-Check

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(T or F) A B vitamin often forms part of an enzyme's active site, where a chemical reaction takes place.

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(T or F) A daily regimen of supplements and vitamin D-enriched foods increases the risk of vitamin D toxicity.

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(T or F) Just 3 ounces of salmon, a naturally rich source of vitamin D, provides most of an adult's daily need for vitamin D.

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(T or F) Most water-soluble vitamins are not stored in tissues to any great extent.

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(T or F) The FDA has extensive regulatory control over supplement sales.

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(T or F) The best and safest source of vitamin D for people in the United States is exposure to sunshine.

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(T or F) The theory that vitamin C prevents or cures colds is well supported by research.

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(T or F) Vitamin A supplements can help treat acne.

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(T or F) Vitamin D functions as a hormone to help maintain bone integrity.

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(T or F) Vitamin K is necessary for the synthesis of key bone proteins.

a. pellagra

A deficiency of niacin may result in which disease? a. pellagra b. beriberi c. scurvy d. rickets

c. coenzymes

B vitamins often act as a. antioxidants b. blood clotting factors c. coenzymes d. none of the above

a. the lymph

Fat-soluble vitamins are most absorbed into a. the lymph b. the blood c. the extracellular fluid d. b and c

d. osteomalacia

In adults with vitamin D deficiency, poor bone mineralization can lead to a. pellagra b. pernicious anemia c. scurvy d. osteomalacia

b. includes a wide variety of nutrient-dense foods

The eating pattern that best provides nutrients a. single out a rich source for each nutrient and focuses on these foods b. includes a wide variety of nutrient-dense foods c. is a Western eating style that includes abundant meats and fats d. singles out rich sources of certain phytochemicals and focuses on these foods

a. excesses are stored and easily build up to toxic levels

The water-soluble vitamins are characterized by all of the following except a. excesses are stored and easily build up to toxic levels b. they travel freely in the blood c. excesses are easily excreted and seldom build up to toxic levels d. b and c

d. all of the above

Vitamin C deficiency symptoms include a. red spots b. loose teeth c. anemia d. all of the above

c. in protecting tissues from oxidation

Vitamin E is famous for its role a. in maintaining bone tissue integrity b. in maintaining connective tissue integrity c. in protecting tissues from oxidation d. as a precursor for vitamin C

d. b and c

Vitamin K a. can be made from exposure to sunlight b. can be obtained from most milk products c. can be made by digestive tract bacteria d. b and c

b. the blood

Water-soluble vitamins are mostly absorbed into a. the lymph b. the blood c. the extracellular fluid d. b and c

c. stored extensively in tissues

Which of the following describes the fat-soluble vitamins? a. few functions in the body b. easily absorbed and excreted c. stored extensively in tissues d. a and c

d. all of the above

Which of the following foods is (are) rich in beta-carotene? a. sweet potatoes b. pumpkin c. spinach d. all of the above

a. raw vegetable oil

Which of the following is (are) rich source(s) of vitamin E? a. raw vegetable oil b. colorful foods, such as carrots c. milk and milk products d. raw cabbage

b. vitamins A, D, E, and K

Which of the following vitamins are classified as fat-soluble? a. vitamins B and D b. vitamins A, D, E, and K c. vitamins B, E, D, and K d. vitamins B and C

b. vitamin B12

Which of these B vitamins is (are) present only in foods of animal origin? a. niacin b. vitamin B12 c. riboflavin d. a and c