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

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

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Microbial Metabolism
The mechanism of passive or facilitated diffusion require

accumulation of solute against an electrochemical gradient
metabolic energy
concentration of solute against an electrochemical gradient
accumulation or concentration of solute against an electrochemical gradient

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