Microbial Metabolism
Bacteriochlorophyll differs from chlorophyll in what way?

The chelated metal in bacteriochlorophyll is not Mg
They have different absorption spectra
There are chemical differences between the two chlorophyll in their side (R) groups
Both (b) and (c)

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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
accumulation or concentration of solute against an electrochemical gradient
metabolic energy

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