According to the US Census Bureau, the world’s population will be an estimated ________ billion by 2050.
a. 5
b. 6.5
c. 7.5
d. 8
e. 9
Answer: D
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A good suggestion for eating in a heart-healthy way would be to
A. use eggs liberally because they are not associated with serum cholesterol. B. trim fat off meat before and after cooking it. C. avoid all treats. D. avoid foods high in monounsaturated fat, such as olive oil.
Approximately what percentage of people with osteoporosis are female?
a. 24 b. 50 c. 67 d. 95
What effect do vitamin B12 injections have in healthy athletes?
A) They increase red blood cell production. B) They increase oxygen delivery to cells. C) They delay the onset of fatigue. D) They have no effect.
The primary (1st level) structure of the protein determines its:
a. function. b. shape. c. rigidity or stability. d. ability to bind with other compounds.