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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?

H2O
H2
H2S
S (elemental sulphur)

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

transamination
deamination
assimilatory nitrate reduction
nitrogen fixation

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

nitrate
acetate
all of these
carbon dioxide

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Microbial Metabolism
The role of bacteriophyll in an oxygenic photosynthesis is to

use light energy to energize an electron
transfer electrons to an intermediate in the sulfide oxidation pathway
reduce NADP directly
reduce ferridoxin directly

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Microbial Metabolism
Nitrogen fixation is a process that requires

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

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Microbial Metabolism
TCA cycle functions in

amphibolic reactions
catabolic reactions
anabolic reactions
none of these

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