What function does a buffer perform?
a. Helps emulsify fats b. Helps maintain a constant pH
c. Facilitates chemical reactions d. Helps protect against plaque buildup
Q. 2After age, what is the next strongest risk factor for osteoporosis?
a. Sex b. Tobacco use
c. Calcium intake d. Physical activity level
Q. 3The only current treatment for phenylketonuria (PKU) is a diet that:
a. restricts phenylalanine and tyrosine.
b. supplies tyrosine and valine.
c. supplies valine and restricts phenylalanine.
d. supplies tyrosine and restricts phenylalanine.
Q. 4Proteins, because they attract hydrogen ions, can act as
a. acids. b. buffers.
c. enzymes. d. antibodies.
Q. 5Approximately what percentage of people with osteoporosis are female?
a. 24 b. 50
c. 67 d. 95
Q. 6In the United States, phenylketonuria (PKU) affects approximately 1 out of _____ births annually.
a. 5,000 b. 10,000
c. 50,000 d. 100,000
Q. 7Tissue swelling that results from water accumulating between cells is known as
a. edema. b. acidosis.
c. alkalosis. d. extravascularization.
Q. 8A person's highest bone density is achieved by around age (years)
a. 18 b. 30.
c. 55 d. 70.
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