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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

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

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Microbial Metabolism
Most of the energy in aerobic respiration of glucose is captured by

electron transport of electrons from NADH
the enzyme formic-hydrogen lyase
substrate-level phosphorylation
long-chain fatty acid oxidation

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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?

S (elemental sulphur)
H2O
H2
H2S

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Microbial Metabolism
The relationship between an oxidation-reduction potential difference and the standard free energy change is (where n is the number of moles of electron transferred, F= Faraday's constant and E°= standard oxidation-reduction potential difference)

ΔG° = -nFE°
ΔG° = nFlnE°
ΔG° = -nFlnE°
ΔG° = nFE°

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Microbial Metabolism
High energy transfer compounds are capable of

measuring free energy
transferring large amounts of free energy
None of these
accepting large amounts of free energy

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