TCA Cycle
A positive redox potential means substance has

lower affinity for proton
higher affinity for electron
higher affinity for proton
lower affinity for electron

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TCA Cycle
Most multi-cellular organisms obtain energy for the synthesis of ATP during oxidative phosphorylation from

a proton gradient across the inner mitochondrial membrane
high energy phosphate compounds
a proton gradient across the outer mitochondrial membrane
a proton gradient across the cell membrane

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