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Microbial Metabolism

Microbial Metabolism
DAHP synthetase catalyzes the condensation of

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

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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?

H2O
H2
S (elemental sulphur)
H2S

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Microbial Metabolism
Phosphate is considered to restrict the induction of

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

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Microbial Metabolism
The role of bacteriophyll in an oxygenic photosynthesis is to

transfer electrons to an intermediate in the sulfide oxidation pathway
reduce ferridoxin directly
reduce NADP directly
use light energy to energize an electron

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Microbial Metabolism
The reaction, where small precursor molecules are assembled into larger organic molecules is referred as

anabolism
metabolism
catabolism
any of these

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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

RNA
DNA
enzymes
all of these

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