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Microbial Metabolism

Microbial Metabolism
TCA cycle functions in

none of these
anabolic reactions
amphibolic reactions
catabolic reactions

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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
S (elemental sulphur)
H2
H2S

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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
enzymes
DNA
all of these

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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
red and blue

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Microbial Metabolism
The bacteriochlorophylls used by the anoxygenic bacteria have absorbance maxima located in the_____portion(s) of the spectrum.

ultraviolet
green
blue
infrared

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Microbial Metabolism
Which of the following is responsible for phosphate solubilization?

Clostridium
Bacillus
Streptococcus
Streptomyces

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