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Microbial Metabolism

Microbial Metabolism
If ΔG of a chemical reaction has a negative value, the reaction

both (a) and (b)
requires energy
none of these
releases energy

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

pentose phosphate pathway
oxaloacetate pathway
glycolyic pathway
glyoxylate pathway

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Microbial Metabolism
In establishing proton gradient for chemiosmotic ATP generation by aerobic respiration the terminal electron acceptor is

CO2
sulfate
nitrate
oxygen

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

Protease
Hydrogenase
Oxidoreductase
Alkaline phosphates

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Microbial Metabolism
The role of bacteriophyll in an oxygenic photosynthesis is to

transfer electrons to an intermediate in the sulfide oxidation pathway
use light energy to energize an electron
reduce NADP directly
reduce ferridoxin directly

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Microbial Metabolism
If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in

cellular bicarbonate
the cytoplasmic membrane
nucleic acids
the fatty acids

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