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Microbial Metabolism

Microbial Metabolism
Nitrogen fixation is a process that requires

both (a) and (b)
an anaerobic environment
energy
an aerobic environment

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Microbial Metabolism
In an oxygenic photosynthesis, the green and the purple bacteria do not use which of the following one as an electron source?

H2S
H2
H2O
S (elemental sulphur)

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Microbial Metabolism
Incorporation of atmospheric N2to NH4+ occurs via the process of

deamination
transamination
nitrogen fixation
assimilatory nitrate reduction

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Microbial Metabolism
The acquisition energy by glucose fermentation requires

the enzyme formic-hydrogen lyase
long-chain fatty acid oxidation
substrate-level phosphorylation
electron transport of electrons from NADH

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Microbial Metabolism
Which of the following(s) is/are the products of the light reactions of photosynthesis?

ATP, NADPH, and O2
ATP and O2 only
NADPH only
ATP only

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Microbial Metabolism
Phosphate deregulated mutants are

none of these
moderately sensitive to phosphate regulation
less sensitive to phosphate regulation
highly sensitive to phosphate regulation

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