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Microbial Metabolism

Microbial Metabolism
Entner - Doudoroff pathway is not found in

Both (a) and (b)
eukaryotes
aerobic prokaryotes
anaerobic prokaryotes

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Microbial Metabolism
In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is

nitrate
sulfate
CO2
oxygen

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Microbial Metabolism
The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.

acetate
nitrate
carbon dioxide
all of these

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Microbial Metabolism
Aerobic catabolism of glucose yields how much energy (ATP synthesized) relative to glucose fermentation?

Slightly less
More than 10 times as much
Twice as much
About the same

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Microbial Metabolism
The major route for incorporation of ammonia (NH4+) into organic compounds is via

oxidation of pyruvate
atmospheric nitrogen fixation
all of these
reduction of pyruvate or alpha-ketoglutarate by enzymes

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Microbial Metabolism
If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in

the fatty acids
nucleic acids
cellular bicarbonate
the cytoplasmic membrane

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