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Microbial Metabolism

Microbial Metabolism
DAHP synthetase catalyzes the condensation of

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

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Microbial Metabolism
Standard free energy change (ΔG) can be expressed as

ΔG° = -RTlnkeq
ΔG° = RTlnkeq
ΔG° = -RT/lnkeq
ΔG° = R/Tlnkeq

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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?

H2
H2S
S (elemental sulphur)
H2O

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

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

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Microbial Metabolism
The reaction, where small precursor molecules are assembled into larger organic molecules is referred as

anabolism
any of these
metabolism
catabolism

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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 cytoplasmic membrane
cellular bicarbonate
the fatty acids
nucleic acids

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