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

glyoxylate pathway
pentose phosphate pathway
glycolyic pathway
oxaloacetate pathway

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Microbial Metabolism
The mechanism of passive or facilitated diffusion require

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

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