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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
all of these
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
In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is

oxygen
CO2
sulfate
nitrate

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Microbial Metabolism
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive sulphur. At the end of 48 hours, it is expected to find the radioactive label located in

DNA
all of these
RNA
enzymes

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Microbial Metabolism
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive phosphorous. At the end of 48 hours, it is expected to find the radioactive label located in

phospholipids
enzymes
all of these
RNA

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Microbial Metabolism
In order to get inorganic phosphorous into organic compounds, the phosphate ion is incorporated via

substrate level phosphorylation
oxidative phosphorylation
DNA
both (a) and (b)

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