A feature that drives the passing of electrons along the ETS. Electrons move from the electron donor with more negative redox potential to an electron acceptor with more positive potential, with carriers in the ETS only able to accept electrons given a more positive redox potential.

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Features of oxidative phosphorylation include:

- Redox potential
- Proton motive force
- ATP synthase

Features of Oxidative Phosphorylation

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The transfer of electrons during the ETS creates potential energy that pumps protons across a membrane (outside the cytoplasmic membrane for prokaryotes and into the intermembrane space for eukaryotes), leading to one side of the membrane being more positively charged (more protons) than the other and thus establishing an electrochemical gradient  known as the proton motive force. This force is used to drive ATP production and other energetically unfavorable processes.

Proton Motive Force

A membrane-bound enzyme complex that acts as a channel for chemiosmosis, with the movement of protons down their gradients promoting the turning of the complex's components which generates ATP via oxidative phosphorylation 

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