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Microbial Metabolism

Microbial Metabolism
If ΔG of a chemical reaction has a negative value, the reaction

both (a) and (b)
requires energy
releases energy
none of these

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Microbial Metabolism
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ .

ATP; methionine
GTP; cytosine
UTP; cytosine
ATP; cytosine

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Microbial Metabolism
Entner-Doudoroff pathway is found in

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

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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
Nitrogen fixation is a process that requires

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

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Microbial Metabolism
Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate ?

Hydrogenase
Protease
Alkaline phosphates
Oxidoreductase

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