Active ________ is required to maintain normal blood calcium and phosphorus levels.

a) Vitamin A
b) Vitamin E
c) Vitamin C
d) Vitamin D


Ans: d) Vitamin D

Nutritional Science

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Since the opening of the twentieth century, the average life expectancy in the U.S. has increased by

A. just over 10 years. B. nearly 20 years. C. about 25 years. D. more than 30 years.

Nutritional Science

The Schilling test detects defects in the absorption of:

a. folic acid b. cyanocobalamin c. pyridoxine d. iron

Nutritional Science

According to the incentive-sensitization theory of addiction, once drug use passes from the initial good feelings of first-stage use, repeated drug use occurs because drug-related cues:

What will be an ideal response?

Nutritional Science

Which of the following is NOT a health problem associated with childhood obesity?

A. Joint discomfort B. Gallstones C. Type 1 diabetes D. Asthma

Nutritional Science