Metabolism | Electron Transport Chain: DETAILED | Part 1

📚 Premium Notes & Illustrations for Electron Transport Chain Part 1: https://www.ninjanerd.org/lecture/electron-transport-chain-detailed-part-1-2

Ninja Nerds!
In this metabolism lecture, Professor Zach Murphy begins Part 1 of a 3-part deep dive into the Electron Transport Chain (ETC)—the mitochondrial system responsible for producing the vast majority of cellular ATP through oxidative phosphorylation. This first installment introduces the structural and functional organization of the ETC, laying the groundwork for understanding how electrons flow and how a proton gradient is established across the inner mitochondrial membrane.

We start by reviewing the location and membrane architecture of the mitochondrial cristae, emphasizing the roles of Complexes I–IV, coenzyme Q (ubiquinone), and cytochrome c in shuttling electrons from high-energy carriers NADH and FADH₂ toward oxygen, the final electron acceptor. You’ll learn how the movement of electrons through each complex releases energy that’s used to pump protons into the intermembrane space, creating an electrochemical gradient essential for ATP synthesis.

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