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Microbial Metabolism

Microbial Metabolism
The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.

carbon dioxide
all of these
acetate
nitrate

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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 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° = -nFlnE°
ΔG° = nFE°

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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
reduce NADP directly
use light energy to energize an electron
reduce ferridoxin directly

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Microbial Metabolism
Most of the energy in aerobic respiration of glucose is captured by

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

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Microbial Metabolism
Phosphate deregulated mutants are

highly sensitive to phosphate regulation
less sensitive to phosphate regulation
moderately sensitive to phosphate regulation
none of these

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