Lecture+16+-+Respiration+2 - Oxidative phosphorylation...

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10/26/2011 1 Oxidative phosphorylation Major steps in respiratory process 1) Glycolysis (Glucose Pyruvate) - Cytosol 2) Citric acid (Krebs) cycle Mitochondrial matrix 3) Oxidative phosphorylation Mitochondrial cristae NADH and FADH 2 formed during glycolysis and Krebs cycle give their electrons to an electron transport chain in the cristae membrane.
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10/26/2011 2 NADH FADH 2 1/2 O 2 energy level of electrons e e Components of the electron transport chain 2e 2H + H 2 O Electron Transport Chain in the mitochondrial cristae Citric acid (Krebs) cycle (summary) Pyruvate Krebs cycle CO 2 NADH ATP 3 NADH 1 FADH 2 Acetyl CoA (3 C) (2 C) 2 CO 2 4 C 6 C CoA Glycolysis (summary ) (2) Pyruvate 4 ATP formed 2 NADH 2 ATP used Glucose 1. Accumulation of protons in the intermembrane space. that leads to; 2. Build up of a proton gradient across the membrane. that leads to; 3. Proton motive force making protons flowing back to the matrix.
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Lecture+16+-+Respiration+2 - Oxidative phosphorylation...

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