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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?

H2O
S (elemental sulphur)
H2
H2S

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Microbial Metabolism
Phosphate deregulated mutants are

less sensitive to phosphate regulation
none of these
highly sensitive to phosphate regulation
moderately sensitive to phosphate regulation

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

catabolism
anabolism
metabolism
biosynthesis

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Microbial Metabolism
When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called

glyoxylate pathway
oxaloacetate pathway
pentose phosphate pathway
glycolyic pathway

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Microbial Metabolism
If ΔG of a chemical reaction is positive in value and keq is less than 1 then the chemical reaction will

proceeed in forward direction
proceed in reverse direction
not take place in any of the direction
none of these

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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
infrared
blue

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