Chapter 7: Vitamins

Chapter 7: Vitamins

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. For a compound to be classified as a vitamin, it must

a.	be synthesized by the body.
b.	be required in large quantities.
c.	perform a vital function.
d.	be water soluble.

 

 

ANS:  C

For a compound to be defined as a vitamin, it must be a vital, organic, dietary substance that is not a carbohydrate, fat, protein, or mineral and is necessary in only very small amounts to perform a specific metabolic function or prevent an associated deficiency. It also cannot be manufactured by the body in sufficient amounts to sustain life and must be supplemented by the body.

 

DIF:    Cognitive Level: Comprehension     REF:   95                  TOP:   Nursing Process: Planning

MSC:  NCLEX: Physiological Integrity: Physiological Adaptation

 

2. A vitamin that behaves more like a hormone than a vitamin is vitamin

a.	A.
b.	D.
c.	E.
d.	K.

 

 

ANS:  B

Vitamin D is a prohormone made in the skin by sunlight.

 

DIF:    Cognitive Level: Knowledge            REF:   99                  TOP:   Nursing Process: Planning

MSC:  NCLEX: Physiological Integrity: Physiological Adaptation

 

3. The provitamin form of vitamin A that is found in plant pigments is

a.	beta-carotene.
b.	chlorophyll.
c.	beta-xanthophyll.
d.	calciferol.

 

 

ANS:  A

Beta-carotene is the provitamin form of vitamin A found in plant pigments. The body converts it to vitamin A, making it a primary source of the vitamin.

 

DIF:    Cognitive Level: Knowledge            REF:   97                  TOP:   Nursing Process: Planning

MSC:  NCLEX: Physiological Integrity: Physiological Adaptation

 

4. Spinach, carrots, and sweet potatoes are good sources of

a.	beta-carotene.
b.	vitamin A.
c.	vitamin D.
d.	vitamin E.

 

 

ANS:  A

Carotene is a group name of three red and yellow pigments (alpha-, beta-, and gamma-carotene) found in dark green and yellow vegetables and some fruits. The body converts beta-carotene to vitamin A.

 

DIF:    Cognitive Level: Application           REF:   98-99             TOP:   Nursing Process: Planning

MSC:  NCLEX: Physiological Integrity: Physiological Adaptation

 

5. Liver is a rich source of

a.	vitamin A (retinol).
b.	vitamin C.
c.	vitamin D.
d.	vitamin E.

 

 

ANS:  A

Liver is a rich source of preformed, natural vitamin A. Other sources include fish liver oils, egg yolk, butter, and cream.

 

DIF:    Cognitive Level: Application           REF:   98                  TOP:   Nursing Process: Planning

MSC:   NCLEX: Physiological Integrity: Physiological Adaptation