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Microbial Metabolism

Microbial Metabolism
Anoxygenic photosynthetic bacteria oxidize

oxgyen
sulfide
water
ammonia

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Microbial Metabolism
Nitrogen fixation is a process that requires

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

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

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

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Microbial Metabolism
In aerobic respiration, the terminal electron acceptor is

nitrogen
oxygen
hydrogen
nitrate

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Microbial Metabolism
The relationship between an oxidation-reduction potential difference and the standard free energy change is (where n is the number of moles of electron transferred, F= Faraday's constant and E°= standard oxidation-reduction potential difference)

ΔG° = -nFE°
ΔG° = nFlnE°
ΔG° = nFE°
ΔG° = -nFlnE°

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Microbial Metabolism
The acquisition energy by glucose fermentation requires

electron transport of electrons from NADH
the enzyme formic-hydrogen lyase
substrate-level phosphorylation
long-chain fatty acid oxidation

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MORE MCQ ON Microbial Metabolism

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