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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?

H2
H2O
H2S
S (elemental sulphur)

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

Cyanobacteria
Phytoplankton
Oak trees
Purple sulfur bacteria

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Microbial Metabolism
Entner - Doudoroff pathway is not found in

eukaryotes
aerobic prokaryotes
Both (a) and (b)
anaerobic prokaryotes

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Microbial Metabolism
During the carboxylation phase of the Calvin cycle, CO2 combines with

ribulose 1,5 - bisphosphate
oxaloacetic acid
pyruvic acid
phosphoglyceraldehyde

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Microbial Metabolism
The chlorophyll molecules used by eucaryotes and cyanobacteria absorb radiant energy in the____________portion(s) of the visible spectrum.

green
green and ultraviolet
red and blue
red

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

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

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