Why is vitamin D known as the "sunshine vitamin"?
a. it functions as a vitamin only during the daylight hours
b. it is available to the body only upon regular exposure to sunlight.
c. it can be produced in the skin by exposure to ultraviolet light.
d. it is activated immediately in the muscles upon exposure to sunlight.
Answer: c. it can be produced in the skin by exposure to ultraviolet light.
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Which lifestyle changes may prevent or lessen the amount of weight gain that occurs with age?
a. regular exercise only b. regularly getting eight hours of sleep at night c. increasing portion sizes at home while decreasing portion sizes in restaurants d. regular exercise and regularly getting eight hours of sleep at night e. regular exercise and decreasing the amount of sleep per night to under seven hours
1 All of the following are considered standard serving sizes of alcohol EXCEPT:
a. 16 ounces of light beer. b. 1 1/2 ounces of 80-proof alcohol. c. 5 ounces of wine. d. 12 ounces of regular beer.
What is included in the study of demographics?
I. age of individuals III. sex of individuals II. population statistics IV. socioeconomic factors a. I only b. all of the above c. II, III d. I, II, III
Insulin is secreted by the alpha cells of the pancreas and in response to increased blood glucose
Indicate whether the statement is true or false