The name of an ion that possesses a positive charge is a(n):
a. anion.
b. cation.
c. acid.
d. base.
B
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Marlene weighs 145 pounds. Converted to metric units, this equals
A) 319 kilograms. B) 66 kilograms. C) 2320 ounces. D) None of these choices are correct.
Foods with a high proportion of__________tend to be solid at room temperature
A) linoleic acid B) eicosapentaenoic acid C) monounsaturated fatty acids D) saturated fatty acids
The movement of water through a selectively permeable membrane is called ________.
A. water permeability B. osmosis C. hydrolysis D. facilitated diffusion
Researchers are conducting a study to determine the effects of the mineral zinc on the human body. The study involves providing pills that contain zinc to one group of human subjects and pills that do not contain zinc or other active ingredients to another group of people. The pills that do not contain zinc are
A. supplements. B. antidotes. C. placebos. D. probiotics.