Final answer:
Each NADH molecule entering the electron transport chain produces approximately 3 ATP, while each FADH2 molecule produces around 2 ATP.
Step-by-step explanation:
The electron transport chain (ETC) is responsible for converting the energy from NADH and FADH2 into ATP during cellular respiration.
Each NADH molecule that enters the ETC produces approximately 3 ATP, while each FADH2 molecule produces around 2 ATP.
Therefore, the net production of ATP from each NADH molecule is 3 ATP, and from each FADH2 molecule is 2 ATP.