Microbial Metabolism
The mechanism of passive or facilitated diffusion require

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

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Microbial Metabolism
Dolichol phosphate is

a chaperone used in protein folding
a product of phospholipase C activation
a complex lipid involved in docking vesicles with the plasma membrane
the anchor on which sugars assemble before transfer to proteins

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