What is the sodium-potassium pump?
a. A cell membrane protein that uses energy to pump sodium into the cell
b. A cell membrane protein that uses energy to pump sodium out of the cell
c. A mechanism present throughout interstitial fluid for draining sodium from the circulation
d. A mechanism present in the kidneys that exchanges sodium with lactic acid in order to regulate organic acid concentration
b
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Which of the following can reduce your risk of developing hypertension?
A. exercise B. losing excess weight C. reducing sodium intake D. all of the above
Which of the following statements is true of bioavailability?
A) It can be influenced by the physiological needs of the body. B) It is adversely affected by the presence of bile in the small intestine. C) It is the extent to which a nutrient is absorbed in the lymph. D) It is independent of the dietary components and medications in the body.
Complex rules that define how humans eat meals are called a. traditions
b. customs. c. manners. d. foodways. e. food habits.
Mass media campaigns are believed to influence a change in health behavior in approximately what percentage of the target audience?
a. 20 percent b. 10 percent c. less than 1 percent d. 15 percent e. 30 percent