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Microbial Metabolism

Microbial Metabolism
Which of the following does not produce oxygen as a product of photosynthesis?

Cyanobacteria
Oak trees
Purple sulfur bacteria
Phytoplankton

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Microbial Metabolism
During the carboxylation phase of the Calvin cycle, CO2 combines with

oxaloacetic acid
phosphoglyceraldehyde
pyruvic acid
ribulose 1,5 - bisphosphate

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

pentose phosphate pathway
glyoxylate pathway
oxaloacetate pathway
glycolyic pathway

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

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

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

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

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Microbial Metabolism
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ .

UTP; cytosine
GTP; cytosine
ATP; cytosine
ATP; methionine

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