W11- Nutrient-Nutrient Interactions

Question 1

True or False. Adverse nutrient-nutrient interactions are most likely to occur with unusual diets, especially if they contain excessive amounts of single nutrients.

Answer 1

True

Question 2

Which of the following promote the absorption of non-heme iron?
A. Vitamin C, citric acid, tricarboxylic acids, amino acids, and sugars
B. Vitamin E, citric acid, tricarboxylic acids, amino acids
C. Vitamin A, citric acid, tricarboxylic acids, amino acids, and sugars

Answer 2

A. Vitamin C, citric acid, tricarboxylic acids, amino acids, and sugars

Question 3

Antioxidant nutrients act synergistically to reduce the toxicity of reactive oxygen species. Which of the following are considered antioxidants?
A. Vitamin C
B. Vitamin E
C. Selenium
D. Beta-carotene
E. All of the above

Answer 3

E. All of the above

Question 4

_________ and __________ can interact with dietary nitrites to prevent their conversion to mutagenic nitrosamines.
A. Vitamin E, Vitamin C
B. Selenium, Vitamin C
C. Vitamin C, beta-carotene

Answer 4

A. Vitamin E, Vitamin C

Question 5

True or false. Dietary fiber may impair the absorption of several mineral elements.

Answer 5

True.

Question 6

These components impair the absorption of non-heme iron.
A. Oxalates, fiber components, and phosphates
B. Carbonates, oxalates, phosphates, fiber components and tannins
C. Only oxalates and tannins

Answer 6

B. Carbonates, oxalates, phosphates, fiber components and tannins

Question 7

Very high intake of either ______, _______ or _______ will interfere with the absorption and utilization of the other two.
A. Copper, iron, selenium
B. Selenium, copper, zinc
C. Copper, iron, zinc

Answer 7

C. Copper, iron, zinc

Question 8

Increases in polyunsaturated fatty acid intake are associated with increased
requirements for \_\_\_\_\_\_\_\_.
A. Vitamin E
B. Vitamin C
C. Vitamin A

Answer 8

A. Vitamin E

Question 9

Excess dietary leucine may antagonize the functions of ________ and impair the conversion of tryptophan to nicotinic acid.
A. Vitamin B2
B. Vitamin B6
C. Vitamin B3

Answer 9

B. Vitamin B6

Question 10

Toxic levels of cadmium interfere with the absorption of ______.
A. Copper
B. Zinc
C. Iron

Answer 10

C. Iron

Question 11

True or False. There is little danger of significant adverse nutrient-nutrient interactions during consumption of healthful diets consistent with dietary guidelines.

Answer 11

True.