In spermatogenesis, ________.
A. diploid gametes are produced
B. both sperms and ovules are produced
C. haploid sperms are produced
D. diploid sperms are produced
Answer: C
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Argon has 18 protons. How many electrons are
in its third energy level? a. 2 b. 4 c. 6 d. 8 e. 10
The Southern Hemisphere has no equivalent of the boreal forest of the north. Why?
a. It has no latitudes near the poles. b. It has insufficient altitudes
c. It has no land in the corresponding latitudes. d. It is too close to the sun during the winter. e. It has an inhospitable temperature
Today, gene swapping between two species is
A. infrequent but possible; it happened more often in the distant past. B. much more frequent compared to in the distant past. C. impossible, but it happened frequently in the distant past. D. only possible if they are in the same family of organisms, such as lions and tigers.
How does aspirin act to decrease the symptoms of inflammation?
A) it acts as an antiprostaglandin. B) it is an antitoxoid for most microbial toxins. C) it prevents complement activation. D) it interferes with the action of interferons. E) it blocks the release of histamine.