Overview
Chapter 11
The fat-soluble vitamins: a, d, e, and k
Multiple Choice
1. 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: 339
DIF: Application-level
OBJ: 11.0
2. 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: 339
DIF: Knowledge-level
OBJ: 11.0
3. Which of the following is a property of the fat-soluble vitamins?
a. Most of them are synthesized 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: 339
DIF: Knowledge-level
OBJ: 11.0
4. 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: 340
DIF: Application-level
OBJ: 11.1
5. 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: 340
DIF: Knowledge-level
OBJ: 11.1
6. How many different forms of vitamin A are active in the body?
a. 1
b. 2
c. 3
d. 5
ANS: c
REF: 340
DIF: Knowledge-level
OBJ: 11.1
7. Which of the following is NOT a form of vitamin A?
a. Retinol
b. Retinal
c. Retinoic acid
d. Retinoquinone
ANS: d
REF: 340
DIF: Knowledge-level
OBJ: 11.1
8. 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: 340
DIF: Knowledge-level
OBJ: 11.1
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: 340-342
DIF: Application-level
OBJ: 11.1
10. Retinol-binding protein is required to transport vitamin
a. A.
b. E.
c. K.
d. D.
ANS: a
REF: 340
DIF: Knowledge-level
OBJ: 11.1
11. What form of vitamin A supports reproduction but not growth?
a. Retinal
b. Retinol
c. Retinoic acid
d. Retinyl esters
ANS: b
REF: 341
DIF: Knowledge-level
OBJ: 11.1
12. What form of vitamin A supports vision but not growth?
a. Retinal
b. Retinol
c. Retinoic acid
d. Retinyl esters
ANS: a
REF: 341
DIF: Knowledge-level
OBJ: 11.1
13. What do retinal and unsaturated fatty acids have in common?
a. Neither is found in animal fats
b. Neither is transported by chylomicrons
c. They may exist in the cis or trans form
d. They are both needed to prevent erythrocyte hemolysis
ANS: c
REF: 341
DIF: Knowledge-level
OBJ: 11.1
Reviews
There are no reviews yet.