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Microbial Metabolism

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

acetate
carbon dioxide
nitrate
all of these

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Microbial Metabolism
When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called

glyoxylate pathway
pentose phosphate pathway
glycolyic pathway
oxaloacetate pathway

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Microbial Metabolism
Phosphate deregulated mutants are

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

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Microbial Metabolism
Entner-Doudoroff pathway is found in

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

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

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

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

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

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