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10 Cards in this Set
- Front
- Back
Oxidative Phosphorylation
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most of ATP synthesis (accounts for 90%)
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Oxidative Phosphorylation steps
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1. Electron transport chain
2. Chemiosmosis |
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Electron transport chain
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chain in which electrons move from one protein complex to another, causing proteins to pump H^+ frm mitochondrial matrix to intermembrane space (generates NO ATP)
• carries alternating reduced/oxidized states of coenzymes |
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Electron Transport Chain process
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1. NADH, FADH go back to oxidized states
2. electrons travel down the chain until they reach O[2]; causing proteins to pump out H^+ protons 3. protons pumped into inner membrane from matrix |
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Electron transport chain location?
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In cristae of mitochondrion
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Final Electron Acceptor
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O[2] through which electrons pass through proteins (ATP synthase) to reach
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Chemiosmosis
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use of energy in H^+ gradient to drive cell work
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ATP synthase
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membrane protein that a proton travels through to turn ADP+P[i] into ATP, uses exergonic flow of H^+ to drive phosphorylation of ATP (endergonic reaction)
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Proton-Motive Force
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H^+ gradient (ADP is generated through proton motive force
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Coenzyme stages in Oxidative Phosphorylation
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I. NADH --> NAD^-
II. FADH[2]-->FAD III. H^+ IV. 2H^+ + 1/2O[2] --> H[2]O |