By the end of spermatogenesis, how many mature sperm have been formed?
a. 1
b. 2
c. 4
d. 3
c. 4
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Animals that obtain most of their heat from the environment are (select all correct choices):
A. ectotherms. B. cold-blooded. C. more likely to use behavioral means to regulate body temperature than physiological means. D. unable to maintain a constant core body temperature. E. most active in the night in order to generate as much heat as possible.
The function(s) of DNA polymerase includes which of the following?
A. DNA synthesis. B. DNA proofreading. C. removal of RNA primers and filling in the gaps. D. DNA synthesis and proofreading. E. DNA synthesis, DNA proofreading, and removal of RNA primers and filling in the gaps.
One atomic mass unit (AMU) approximately equals the mass of one
A. proton. B. electron. C. nucleus. D. proton plus the mass of one neutron.
How does the circulatory system of an annelid differ from the circulatory system of a gastropod?
What will be an ideal response?