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Microbial Metabolism

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

H2
H2O
S (elemental sulphur)
H2S

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Microbial Metabolism
Nitrogen fixation is a process that requires

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

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Microbial Metabolism
During the reduction phase of the Calvin cycle, phosphoglyceric acid is reduced to______utilizing________as the reduction source.

pyruvic acid; NADPH+H+
ribulose 1,5 - bisphosphate; NADH+H+
phosphoglyceraldehyde; NADPH+H+
phosphoglyceraldehyde; NADH+H+

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Microbial Metabolism
DAHP synthetase catalyzes the condensation of

phosphoenol pyruvate
erythrose-4-phosphate
both (a) and (b)
phenylalanine

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Microbial Metabolism
Entner-Doudoroff pathway is found in

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

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

deamination
assimilatory nitrate reduction
nitrogen fixation
transamination

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