Oxidative phosphorylation

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Oxidative phosphorylation
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In electron transport

• NADH is oxidized and O2 is reduced

DG -53 kcal/mol
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The Electron Transport Chain
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Chemiosmosis
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Chemiosmosis

• Oxidation of NADH provides energy to transport H
  ions across the membrane forming a hydrogen ion
  gradient.
• The H ions flow back across the membrane through
  the ATP synthase providing energy for ATP
  formation.

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The hydrogen ion pump is an example of active
transport.
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Mitochondrial Structure
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The ATP synthase
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Summary

H

H

ADP P
H
ATP
Providing energy for ATP formation

H
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Amount of ATP Formed
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Respiration and Fermentation
Fermentation
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Lactic Acid Fermentation
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Ethanol Fermentation
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Krebs Cycle
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Other Catabolism
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Control of Metabolism