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Microbial Metabolism

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

anabolism
catabolism
biosynthesis
metabolism

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Microbial Metabolism
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ .

ATP; cytosine
ATP; methionine
UTP; cytosine
GTP; cytosine

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Microbial Metabolism
DAHP synthetase catalyzes the condensation of

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

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Microbial Metabolism
Bacteriochlorophyll differs from chlorophyll in what way?

Both (b) and (c)
There are chemical differences between the two chlorophyll in their side (R) groups
The chelated metal in bacteriochlorophyll is not Mg
They have different absorption spectra

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Microbial Metabolism
Nitrogen fixation is a process that requires

an aerobic environment
energy
both (a) and (b)
an anaerobic environment

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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
enzymes
DNA
RNA

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