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Microbial Metabolism

Microbial Metabolism
Anoxygenic photosynthetic bacteria oxidize

ammonia
oxgyen
sulfide
water

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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
S (elemental sulphur)
H2S
H2O

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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

the cytoplasmic membrane
cellular bicarbonate
the fatty acids
nucleic acids

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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

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

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Microbial Metabolism
Phosphate is considered to restrict the induction of

secondary metabolites
primary metabolites
none of these
both (a) and (b)

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Microbial Metabolism
Bacteriochlorophyll differs from chlorophyll in what way?

They have different absorption spectra
The chelated metal in bacteriochlorophyll is not Mg
Both (b) and (c)
There are chemical differences between the two chlorophyll in their side (R) groups

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