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Microbial Metabolism

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

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

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

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

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Microbial Metabolism
The major route for incorporation of ammonia (NH4+) into organic compounds is via

reduction of pyruvate or alpha-ketoglutarate by enzymes
atmospheric nitrogen fixation
oxidation of pyruvate
all of these

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Microbial Metabolism
As the electron flow through the chains, much of their free energy is conserved in the form of ATP. This process is called

none of these
oxidative phosphorylation
dehydrogenations
electromotive potential

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

Hydrogenase
Alkaline phosphates
Protease
Oxidoreductase

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Microbial Metabolism
Nitrogen fixation is a process that requires

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

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