Epidemiological studies of AIDS in Africa have confirmed that ________ transmission of the virus is the norm in that region
A) fomite
B) indirect
C) heterosexual
D) homosexual
Answer: C
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The amount of blood each ventricle pumps in a minute is the
a. cardiac output. b. cardiac cycle. c. cardiac volume. d. cardiac tamponade. e. cardiac measure.
The field of sociobiology was much expanded by the book, Sociobiology: The New Synthesis, writtenby:a
K. Lorenz. b. N. Tinbergen. c. W. Hamilton. d. W. Dilger. e. E. O. Wilson
If a cell contains lysosomes, what type of cell must it be?
a. a fungal cell b. a prokaryotic cell c. an animal cell d. a plant cell
According to the operon model, for the synthesis of an inducible enzyme to occur, the
A) end-product must not be in excess. B) substrate must bind to the enzyme. C) substrate must bind to the repressor. D) repressor must bind to the operator. E) repressor must not be synthesized.