How does vitamin A affect the immune system?

A) It takes up and stores iron, keeping it away from invading microbes.
B) It has no effect on the immune system.
C) It suppresses the immune response.
D) It is necessary for the differentiation of immune cells.


C

Nutritional Science

You might also like to view...

The enzyme _______________ is found mostly in the liver and metabolizes ethanol to acetaldehyde

Fill in the blank(s) with correct word

Nutritional Science

Exchange of oxygen, nutrients, and waste materials takes place across the walls of small blood vessels called ____.?

A) ?ducts B) ?venules C) ?arterioles D) ?capillaries

Nutritional Science

Nutrition-related factors may increase or decrease the risk of developing cancer

a. True b. False Indicate whether the statement is true or false

Nutritional Science

Oxidative phosphprylation is the preferred energy system during ____

A) sustained, repeated sprints B) very heavy weight lifting C) short, fast sprints D) dance aerobics

Nutritional Science