Microbial Metabolism
The mechanism of passive or facilitated diffusion require

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

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Microbial Metabolism
Dolichol phosphate is

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

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