Schlenker & Gilbert: Williams’ Essentials of Nutrition and Diet Therapy, 11th
Edition
MULTIPLE CHOICE
1. The chemical name for preformed vitamin A is:
a. beta carotene.
b. rhodopsin.
c. retinaldehyde.
d. retinol.
ANS: D DIF: Easy REF: p. 102
MSC: Type of Question: Knowledge
2. The major provitamin form of vitamin A found in plant pigments is known as:
a. beta carotene.
b. chlorophyll.
c. retinoid.
d. beta xanthophyll.
ANS: A DIF: Easy REF: p. 102
MSC: Type of Question: Knowledge
3. Liver stores of vitamin A are usually sufficient to last approximately:
a. 1 week.
b. 3 to 5 weeks.
c. 6 to 12 months.
d. 1 to 2 years.
ANS: C DIF: Medium REF: p. 104
MSC: Type of Question: Knowledge
4. Vitamin A deficiency causes abnormal cell differentiation and results in:
a. beriberi.
b. pellagra.
c. keratinization.
d. kwashiorkor.
ANS: C DIF: Medium REF: p. 105
MSC: Type of Question: Knowledge
,5. A deficiency of vitamin A in the body may result in:
a. night blindness.
b. biliary obstruction.
c. alopecia.
d. color blindness.
ANS: A DIF: Easy REF: p. 105
MSC: Type of Question: Knowledge
6. An example of a meal high in vitamin A is:
a. cheese omelet.
b. turkey sandwich.
c. beans and rice.
d. meatloaf and mashed potatoes.
ANS: A
Good sources of vitamin A include cheese and egg yolks. These would be found in a
cheese omelet. Meat and poultry, grains, legumes, and potatoes are not good sources of
vitamin A or precursor carotenoids.
DIF: Medium REF: p. 107 MSC: Type of Question: Application
7. The condition resulting from hypovitaminosis A that can cause blindness is known as:
a. cheilosis.
b. xerophthalmia.
c. pellagra.
d. keratinization.
ANS: B DIF: Medium REF: p. 105
MSC: Type of Question: Knowledge
8. The type of tissue that is most vulnerable to a vitamin A deficiency is:
a. connective.
b. nervous.
c. epithelial.
d. muscle.
ANS: C DIF: Hard REF: p. 106
MSC: Type of Question: Knowledge
9. A vitamin that is essential to bone growth is vitamin:
, a. D.
b. B12.
c. E.
d. C.
ANS: A DIF: Easy REF: p. 109
MSC: Type of Question: Knowledge
10. The Recommended Dietary Allowance (RDA) for vitamin A is expressed in:
a. milligrams (mg).
b. micrograms (mcg).
c. beta-carotene equivalents.
d. vitamin equivalents.
ANS: B DIF: Hard REF: p. 106
MSC: Type of Question: Knowledge
11. Spinach, carrots, and sweet potatoes are good sources of:
a. beta carotene.
b. retinol.
c. vitamin D.
d. vitamin E.
ANS: A DIF: Medium REF: p. 108
MSC: Type of Question: Knowledge
12. The active hormonal form of vitamin D is synthesized by the combined action of the:
a. skin, liver, and kidney.
b. gallbladder, liver, and pancreas.
c. thyroid gland, small intestine, and lymph
system.
d. colonic bacteria, kidney, and
adrenal gland.
ANS: A DIF: Medium REF: p. 107
MSC: Type of Question: Knowledge
13. The primary function of vitamin D is to regulate absorption and metabolism of:
a. iron and zinc.
b. calcium and phosphorus.
, c. sodium and chloride.
d. potassium and magnesium.
ANS: B DIF: Easy REF: p. 109
MSC: Type of Question: Knowledge
14. Vitamin D deficiency is most likely to occur in a child who is involved in:
a. soccer.
b. baseball.
c. gymnastics.
d. tennis.
ANS: C
Gymnastics is an indoor sport, so the child would have less sun exposure. This would
result in less vitamin D production in his or her skin.
DIF: Medium REF: p. 111 MSC: Type of Question: Application
15. Rickets is caused by a deficiency of:
a. vitamin A.
b. cobalamin.
c. niacin.
d. vitamin D.
ANS: D DIF: Medium REF: p. 110
MSC: Type of Question: Knowledge
16. The adult form of rickets is called:
a. osteoporosis.
b. osteopenia.
c. osteomalacia.
d. osteomyelitis.
ANS: C DIF: Medium REF: p. 110
MSC: Type of Question: Knowledge
17. A factor that has significantly contributed to elimination of rickets in developed countries
is:
a. an increase in outdoor activities.
b. an increase in use of sunscreens.
c. the availability of fresh produce year-