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Microbial Metabolism

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

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

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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

nucleic acids
cellular bicarbonate
the fatty acids
the cytoplasmic membrane

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Microbial Metabolism
During the reduction phase of the Calvin cycle, phosphoglyceric acid is reduced to______utilizing________as the reduction source.

pyruvic acid; NADPH+H+
phosphoglyceraldehyde; NADPH+H+
ribulose 1,5 - bisphosphate; NADH+H+
phosphoglyceraldehyde; NADH+H+

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

pressure difference
all of these
ionic difference
concentration difference

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Microbial Metabolism
Bacteriochlorophyll differs from chlorophyll in what way?

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

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Microbial Metabolism
Anoxygenic photosynthetic bacteria oxidize

sulfide
oxgyen
ammonia
water

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