Electrons carried by NADH enter the electron transport system when they are transferred to:
| 1. | FMN | 2. | Ubiquinone |
| 3. | Fe-S | 4. | FAD |
ATP synthesis during oxidative phosphorylation in mitochondria is directly driven by:
| 1. | oxidation of glucose. |
| 2. | electron transport downhill in the ETC. |
| 3. | terminal transfer of electrons to oxygen. |
| 4. | chemiosmosis. |
| I: | Complex I is NADH dehydrogenase |
| II: | Complex II is succinate dehydrogenase |
| III: | Complex III is cytochrome b6f complex. |
| A. | Final acceptor of electrons |
| B. | Final acceptor of protons |