Microbial Metabolism
In order to get inorganic phosphorous into organic compounds, the phosphate ion is incorporated via

DNA
substrate level phosphorylation
oxidative phosphorylation
both (a) and (b)

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Microbial Metabolism
The mechanism of passive or facilitated diffusion require

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

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