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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.

green
blue
infrared
ultraviolet

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Microbial Metabolism
Phosphate deregulated mutants are

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

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Microbial Metabolism
Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420?

Acetogens (acetigens; acetate-producing microbes)
Methanogens (methane-producing microbes)
Sulfate-reducing bacteria
Methanotrophs (methane-oxidizing microbes)

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

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

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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)
H2
H2O
H2S

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Microbial Metabolism
Assimilatory sulfate reduction involves the nucleotide __________ during the incorporation of H2S in the production of __________ .

ATP; methionine
UTP; cytosine
ATP; cytosine
GTP; cytosine

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