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Microbial Metabolism

Microbial Metabolism
Digestive reactions where large molecules are broken down into smaller ones are referred as

catabolism
anabolism
metabolism
biosynthesis

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Microbial Metabolism
Phosphate is considered to restrict the induction of

primary metabolites
secondary metabolites
none of these
both (a) and (b)

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

Purple sulfur bacteria
Phytoplankton
Oak trees
Cyanobacteria

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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
RNA
enzymes
all of these

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

deamination
transamination
nitrogen fixation
assimilatory nitrate reduction

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Microbial Metabolism
In an oxygenic photosynthesis, the green and the purple bacteria do not use which of the following one as an electron source?

S (elemental sulphur)
H2
H2O
H2S

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