The amount of ultraviolet radiation hitting the Earth's surface is greatly reduced by which gas in the atmosphere?
a. ozone
b. oxygen
c. water
d. carbon dioxide
e. nitrogen vapor
Answer: a. ozone
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Protein denaturation can
A. occur due to certain chemicals. B. occur due to pH changes. C. occur due to high temperature. D. cause the protein to no longer function. E. All of the choices are correct.
To produce a genomic library DNA, DNA fragments are incorporated into plasmids that are introduced into bacteria
__________________ Indicate whether the statement is true or false.
Malignant tumors are characterized by:
a. metastasis. b. abnormal cell growth. c. the formation of cell masses. d. specific mutations. e. proto-oncogenes.
The degree of parental investment required often results in the nonrandom mating behavior called ________.
A. fidelity B. allopatry C. mate choice D. preferability