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Microbial Metabolism

Microbial Metabolism
DAHP synthetase catalyzes the condensation of

both (a) and (b)
erythrose-4-phosphate
phosphoenol pyruvate
phenylalanine

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

oxygen
nitrate
CO2
sulfate

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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

all of these
DNA
enzymes
RNA

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Microbial Metabolism
Which of the following is responsible for phosphate solubilization?

Clostridium
Streptococcus
Bacillus
Streptomyces

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Microbial Metabolism
If ΔG of a chemical reaction has a negative value, the reaction

none of these
both (a) and (b)
requires energy
releases energy

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Microbial Metabolism
Incorporation of atmospheric N2to NH4+ occurs via the process of

deamination
nitrogen fixation
transamination
assimilatory nitrate reduction

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