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Microbial Metabolism

Microbial Metabolism
Which of the following(s) is/are the products of the light reactions of photosynthesis?

ATP, NADPH, and O2
ATP only
NADPH only
ATP and O2 only

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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
glycolyic pathway
glyoxylate pathway
oxaloacetate pathway

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

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

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

nitrogen fixation
transamination
assimilatory nitrate reduction
deamination

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

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

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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
enzymes
RNA

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