The pH of rain and snow in the eastern United States is now
A. 2.
B. 7.
C. 10.
D. 4.2.
Answer: D
Biology & Microbiology
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The pentose phosphate pathway produces
A. glyceraldehyde 3-phosphate. B. NADPH. C. CO2. D. All of the choices are correct.
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?-galactosidase is used in bacterial screening assays for visualization of colonies that contain recombinant DNA. What
is its substrate?
a. lactose b. X-gal c. sucrose d. lacZ e. agarose
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The vertebrate jaw first appeared in
a. fishes. b. amphibians. 272 Test Bank c. reptiles. d. birds. e. mammals.
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Which of the following types of waste can NOT be used as an alternative energy resource?
A. methane gas from landfills B. plant and animal processing wastes C. municipal solid waste D. animal manure/dung E. All of the above are types of waste that can be used as alternative energy resources.
Biology & Microbiology