Multiple Choice

1. Which of the following statements is true of trace minerals?

A. They are needed by the body in smaller amounts than macronutrients.

B. Overall they amount to less than 5 grams in the body.

C. Their daily dietary need is less than 20 milligrams.

D. All of the above are true of trace minerals.

2. Which of the following is a trace mineral?

A. iron

B. calcium

C. sodium

D. magnesium

3. All of the following are trace minerals except

A. selenium.

B. copper.

C. potassium.

D. zinc.

4. Functions of trace minerals include all of the following except

A. maintenance of red blood cells.

B. acting as cofactors.

C. providing energy.

D. maintenance of bones and teeth.

5. Which of the following trace minerals has an adult RDA that is higher for women than for men?

A. zinc

B. iron

C. copper

D. iodine

6. Which of the following statements is true about trace minerals?

A. Trace mineral deficiencies are overlooked easily.

B. Trace minerals have interactions with other nutrients.

C. The bioavailability of trace minerals depends on the individual and his or her specific dietary composition.

D. All of the above are true of trace minerals.

7. The most abundant trace mineral in the body is

A. iron.

B. zinc.

C. copper.

D. iodine.

8. Which of the following does not affect the absorption of iron?

A. molecular form of iron

B. environmental temperature

C. iron status of the individual

D. diet composition

9. Once ferritin is saturated with iron, additional iron can be stored as ________.

A. ferroportin

B. hemoglobin

C. transferrin

D. hemosiderin

10. Which of the following transports iron across the intestinal wall into the portal vein?

A. ferroportin

B. hemoglobin

C. transferrin

D. hemosiderin