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Microbial Metabolism

Microbial Metabolism
The glyoxylate cycle is used by some microorganisms when___________ is the sole carbon source.

all of these
acetate
nitrate
carbon dioxide

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

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

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

infrared
blue
green
ultraviolet

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Microbial Metabolism
Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive sulphur. At the end of 48 hours, it is expected to find the radioactive label located in

DNA
all of these
enzymes
RNA

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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
proceed in reverse direction
proceeed in forward direction
not take place in any of the direction

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Microbial Metabolism
The role of bacteriophyll in an oxygenic photosynthesis is to

transfer electrons to an intermediate in the sulfide oxidation pathway
reduce ferridoxin directly
reduce NADP directly
use light energy to energize an electron

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