Understanding Nutrition Australian And New Zealand Edition 1st Edition By Eleanor – Test Bank

Overview

Chapter 11
The Fat-Soluble Vitamins: A, D, E, and K

Multiple Choice Questions

1. If the diet contains precursor vitamin A, which of the following tissues can use it to form vitamin A?
a. Eyes
b. Kidneys
c. Adipose cells
d. Intestinal cells
ANS: d
REF: 363
DIF: Application Level

2. Which of the following food substances can be converted to vitamin A in the body?
a. Tryptophan
b. Chlorophyll
c. Xanthophyll
d. Beta-carotene
ANS: d
REF: 363
DIF: Knowledge Level

3. Which of the following is not among the features of the fat-soluble vitamins?
a. Require bile for absorption
b. Found in the fat and oily parts of foods
c. Transported permanently to the liver and adipose tissue
d. Pose a greater risk for developing a toxicity than water-soluble vitamins
ANS: c
REF: 363
DIF: Application Level

4. What is the major carrier of the fat-soluble vitamins from the intestinal epithelial cell to the circulation?
a. Albumin
b. Cholesterol
c. Chylomicrons
d. Liposoluble binding proteins
ANS: c
REF: 363
DIF: Knowledge Level

5. Which of the following is a property of the fat-soluble vitamins?
a. Most of them are synthesised by intestinal bacteria
b. Intestinal transport occurs by way of the portal circulation
c. Deficiency symptoms may take years to develop on a poor diet
d. Toxicity risk is higher for vitamins E and K than for other fat-soluble vitamins
ANS: c
REF: 363
DIF: Knowledge Level

6. Which of the following is not a fat-soluble vitamin?
a. Retinol
b. Tocopherol
c. Phylloquinone
d. Cyanocobalamin
ANS: d
REF: 363
DIF: Knowledge Level

7. How many different forms of vitamin A are active in the body?
a. 1
b. 2
c. 3
d. 5
ANS: c
REF: 363
DIF: Knowledge Level

8. All of the following are forms of vitamin A except
a. retinol.
b. retinal.
c. retinoic acid.
d. retinoquinone.
ANS: d
REF: 363
DIF: Knowledge Level

9. As far as is known, vitamin A does not play an important role in which of the following processes?
a. Blood clotting
b. Growth of bones and teeth
c. Synthesis of visual pigment
d. Maintaining mucous membranes
ANS: a
REF: 364–367
DIF: Application Level

10. Which of the following is responsible for transporting vitamin A from the liver to other tissues?
a. Albumin
b. Rhodopsin
c. Retinol-binding protein
d. Transcarotenoid protein
ANS: c
REF: 364
DIF: Knowledge Level

11. What are the known effects of raising animals on diets containing retinoic acid as the only source of vitamin A?
a. Growth is stunted
b. Blindness develops
c. Retinal synthesis is stimulated
d. Retinol synthesis is stimulated
ANS: b
REF: 364–365
DIF: Application Level