Electron Transport Chain

• Creates around 32-34 ATP molecules.
• Electrons carried in NADH and FADH2 release energy to make ATP.
• Occurs in the inner mitochondrial membrane.
• NADH and FADH2 release electrons and protons and become oxidized.
• Electrons travel through protein carriers and O2 is the final electron acceptor which is reduced.
• Electron transport chains create proton gradient.
• High H+ concentration in intermediate space and low in matrix via Active Pumps
• Every electron carrier pumps H+ every 2 electrons.
• Protons diffuse back down concentration gradient via ATP Synthase.
• ATP Synthase produces ATP.
• ADP + P -> ATP
• The process of producing ATP via ATP Synthase is chemiosmosis.
• Oxidation phosphorylation is the process of oxygen becoming water.
• ETC is an aerobic process.