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Microbial Metabolism

Microbial Metabolism
Which of the following does not produce oxygen as a product of photosynthesis?

Phytoplankton
Purple sulfur bacteria
Oak trees
Cyanobacteria

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

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

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

blue
ultraviolet
green
infrared

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

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

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Microbial Metabolism
The specific enzyme/(s) of the glyoxylate cycle is/are

anaplerotic
malate synthase
isocitrate lyase
both (a) and (b)

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Microbial Metabolism
The major route for incorporation of ammonia (NH4+) into organic compounds is via

reduction of pyruvate or alpha-ketoglutarate by enzymes
all of these
atmospheric nitrogen fixation
oxidation of pyruvate

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