Cellular Respiration Part 2 AP Biology Cellular Respiration Part 2

Is Oxygen present?

Pyruvate Conversion CYTOSOL MITOCHONDRION NAD+ NADH + H+ Acetyl Co A Coenzyme A Transport protein

Kreb’s Cycle Simplified

Actual Kreb’s Cycle

Electron Transport Chain is located on the inner FOLDED membrane

Electron Transport Chain (Proteins are H+ Pumps)

“Building” the proton concentration gradient Inner mitochondrial membrane Citric acid cycle Oxidative phosphorylation: electron transport and chemiosmosis Glycolysis ATP ATP ATP H+ H+ H+ H+ Protein complex of electron carriers Cyt c Intermembrane space Q IV I III ATP synthase Inner mitochondrial membrane II 2H+ + 1/2 O2 H2O FADH2 FAD NADH + H+ NAD+ ADP + P ATP i (carrying electrons from food) H+ Mitochondrial matrix Electron transport chain Electron transport and pumping of protons (H+), Which create an H+ gradient across the membrane Chemiosmosis ATP synthesis powered by the flow of H+ back across the membrane Oxidative phosphorylation

ATP Synthetase Complex using kinetic movement of H+ (protons)