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Microbial Metabolism

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

infrared
blue
ultraviolet
green

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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

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

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Microbial Metabolism
Standard free energy change (ΔG) can be expressed as

ΔG° = RTlnkeq
ΔG° = -RT/lnkeq
ΔG° = -RTlnkeq
ΔG° = R/Tlnkeq

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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?

H2
H2O
H2S
S (elemental sulphur)

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Microbial Metabolism
Entner-Doudoroff pathway is found in

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

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Microbial Metabolism
Which of the following nucleoside diphosphates is used most often in carbohydrate anabolism?

Guanine diphosphate
Thymine diphosphate
Uridine diphosphate
Adenosine diphosphate

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