Place the following steps of the electron transport system (ETS) and ATP formation in the correct order. 1. Movement of hydrogen ions provides energy to ATP synthesis.
2) Electrons from FADH₂ pass to coenzyme Q.
3) Electrons are transported to respiratory complex III.
4) ADP combines with P to form ATP.
5) Electrons from NADH pass to coenzyme Q.
6) Electrons combine with oxygen and hydrogen ions to form water molecules.

Question

Quizplus · Accepted Answer

The order of steps in the electron transport system (ETS) and ATP formation is as follows:
1. Electrons from NADH pass to coenzyme Q.
2. Electrons from FADH2 pass to coenzyme Q.
3. Electrons are transported to respiratory complex III.
4. Electrons combine with oxygen and hydrogen ions to form water molecules.
5. Movement of hydrogen ions provides energy to ATP synthesis.
6. ADP combines with P to form ATP. 
Choice B correctly orders the steps in the ETS and ATP formation.

Place the Following Steps of the Electron Transport System (ETS)