Nadh and fadh 2 are important in cellular respiration because they deliver high-energy electrons to the electron transport system. electron transport produces atp molecule(s) per nadh molecule and atp molecules(s) perfadh 2 molecule.

Electron transport produces 3 ATP molecule(s) per NADH molecule and 2 ATP molecules(s) perFADH 2 molecule.

Explanation:

The mechanism by which ATP is produced is explained by the theory of chemosmotic coupling.

This theory establishes that the synthesis of ATP in cellular respiration comes from an electrochemical gradient existing between the internal membrane and the space of the intermembrane of the mitochondria, through the use of the energy of NADH and FADH2 that have been formed by the rupture of molecules rich in energy, such as glucose.

thats how its supposed to be

4d^55s^1 ( third choice)