Question

Part A Rank from the first to the last steps to describe the correct order of events of the electron transport chain and oxidative phosphorylation. Reset Help WH ADP + P ATP ATP H hace 21. 2 10.-H.O synthase ADP and Pbind to ATP synthase and form ATP. Bectron flow through complees ill and I continues to drive the pumping of Hinto the intermembrane space NADH and FADH, are cuidized the flow of their electrons generates an electromotive force in the electron transport chain. Htflow through theion channel, causing the rotor to spin and making the enzyme release the ATP. Complexluses electro- motive force to pump + into the intermembrane space against the concentration gradient. Complex IV transfers the electrons to Cygen-the final electron accepter to form H0 First

Rank from the first to the last steps to describe the correct order of events of the electron transport chain and oxidative phosphorylation.

Answer 1

Sol.

The correct order of events of the electron transport chain and oxidative phosphorylation are as follows:

1. NADH and FADH_​​​2 are oxidized, the flow of their electrons generates an electromotive force in the electron transport chain.
2. Complex I uses the electromotive force to pump H^{​​​​​+} into the intermembrane space against the concentration gradient.
3. Electron flow through complexes III and IV continues to drive the pumping of H⁺ into the intermembrane space.
4. Complex IV transfers the electron to oxygen-the final electron acceptor to form H₂O.
5. ADP and P_{​​​​​​i} binds to ATP synthase and form ATP.
6. H⁺ flow through the ion channel, causing the rotor to spin and making the enzyme release the ATP.