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Microbial Metabolism

Microbial Metabolism
Phosphate is considered to restrict the induction of

primary metabolites
both (a) and (b)
none of these
secondary metabolites

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

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

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Microbial Metabolism
Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?

Sulfate-reducing bacteria
Acetogens (acetigens; acetate-producing microbes)
Methanotrophs (methane-oxidizing microbes)
Methanogens (methane-producing microbes)

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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
Incorporation of atmospheric N2to NH4+ occurs via the process of

assimilatory nitrate reduction
nitrogen fixation
deamination
transamination

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Microbial Metabolism
In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is

CO2
oxygen
nitrate
sulfate

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