Uploaded September 2023 | Updated September 2026, 2 hours ago

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You can find all my A Level Biology videos fully indexed at freesciencelessons.co.uk/a-level-revision-videos/a-level-biology

In this video, we look at oxidative phosphorylation. First we explore how the electron transport chain uses reduced NAD and reduced FAD to create a proton electrochemical gradient. We then look at how this proton gradient is used by the enzyme ATP synthase to produce ATP in the process of chemiosmosis.