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Microbial Metabolism

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)
H2
H2O
H2S

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Microbial Metabolism
Phosphate deregulated mutants are

less sensitive to phosphate regulation
moderately sensitive to phosphate regulation
highly sensitive to phosphate regulation
none of these

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

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

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Microbial Metabolism
Bacteriochlorophyll differs from chlorophyll in what way?

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

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Microbial Metabolism
The reactions of the cell that are carried out for capturing energy are called

metabolism
catabolism
anabolism
activation energy

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Microbial Metabolism
In the passive diffusion, solute molecules cross the membrane as a result of

ionic difference
concentration difference
all of these
pressure difference

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