Question

The ETS reactions produce ATP from ADP using the energy provided by which two molecules?

Answer 1

The correct answer is NADH and FADH₂.

ADP is synthesized from ATP using the H+ ions released from both NADH and FADH₂ which oxidizes to NAD+ and FAD2+. The H+ ions move to inter membrane space and are utilized by ATP.  

Answer 2

Answer:  NADH and FADH2

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