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Microbial Metabolism

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
The major route for incorporation of ammonia (NH4+) into organic compounds is via

oxidation of pyruvate
atmospheric nitrogen fixation
reduction of pyruvate or alpha-ketoglutarate by enzymes
all of these

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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
reduce ferridoxin directly
use light energy to energize an electron
reduce NADP directly

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Microbial Metabolism
The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.

nitrate
carbon dioxide
acetate
all of these

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

glycolyic pathway
glyoxylate pathway
pentose phosphate pathway
oxaloacetate pathway

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

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

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MORE MCQ ON Microbial Metabolism

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