Microbial Metabolism
When acetate is the sole source of carbon for some microorganisms, the cycle which is used, is called

glycolyic pathway
glyoxylate pathway
oxaloacetate pathway
pentose phosphate pathway

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Microbial Metabolism
The mechanism of passive or facilitated diffusion require

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

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