A ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water B ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water C ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water D ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water E ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water F ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water G ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water H ? ADP ATP ATP synthase Complex I (NADH oxidase) Complex II (succinate dehydrogenase) Complex III (cytochrome bc1 complex) Complex IV (cytochrome c oxidase) FAD Intermembrane space Krebs cycle Matrix NAD+ NADH Oxygen Phospholipid bilayer Water