Understanding Nutrition 13th Edition By Eleanor Noss Whitney – Test Bank

Overview

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

Multiple Choice Questions

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

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

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

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

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

6. How many different forms of vitamin A are active in the body?
a. 1
b. 2
c. 3
d. 5

7. Which of the following is NOT a form of vitamin A?
a. Retinol
b. Retinal
c. Retinoic acid
d. Retinoquinone

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

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

10. Retinol-binding protein is required to transport vitamin
a. A.
b. E.
c. K.
d. D.

11. What form of vitamin A supports reproduction but not growth?
a. Retinal
b. Retinol
c. Retinoic acid
d. Retinyl esters

12. What form of vitamin A supports vision but not growth?
a. Retinal
b. Retinol
c. Retinoic acid
d. Retinyl esters

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

Answer Key

(ANS = correct answer, REF = page reference, DIF = difficulty, OBJ = learning objective)

Multiple Choice
1. ANS: c REF: 339 DIF: Application-level OBJ: 11.0
2. ANS: c REF: 339 DIF: Knowledge-level OBJ: 11.0
3. ANS: c REF: 339 DIF: Knowledge-level OBJ: 11.0
4. ANS: d REF: 340 DIF: Application-level OBJ: 11.1
5. ANS: d REF: 340 DIF: Knowledge-level OBJ: 11.1
6. ANS: c REF: 340 DIF: Knowledge-level OBJ: 11.1
7. ANS: d REF: 340 DIF: Knowledge-level OBJ: 11.1
8. ANS: c REF: 340 DIF: Knowledge-level OBJ: 11.1
9. ANS: a REF: 340-342 DIF: Application-level OBJ: 11.1
10. ANS: a REF: 340 DIF: Knowledge-level OBJ: 11.1
11. ANS: b REF: 341 DIF: Knowledge-level OBJ: 11.1
12. ANS: a REF: 341 DIF: Knowledge-level OBJ: 11.1
13. ANS: c REF: 341 DIF: Knowledge-level OBJ: 11.1