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Microbial Metabolism

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)
H2O
H2
H2S

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

Cyanobacteria
Oak trees
Phytoplankton
Purple sulfur bacteria

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

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

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

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

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Microbial Metabolism
Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate ?

Protease
Oxidoreductase
Hydrogenase
Alkaline phosphates

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Microbial Metabolism
The catabolic reaction, pentose-phosphate exists in

prokaryotic and eukaryotic cells both
eukaryotic cells
none of these
prokaryotic cells

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