In cellular respiration what role does NAD⁺ play?

The correct answer is: Electron carrier

In cellular respiration, NAD⁺ plays the vital role of Electron carrier.

• NAD⁺ performs the function of an electron carrier. By oxidizing the molecules, it takes up their electrons and adds H⁺ to produce NADH.
• NADH is a reducing agent which then gives these electrons at the ETS (Electron transport system).
• These electrons then flow through a series of complexes which results in the production of ATP.
• Three ATP molecules are produced by the ETS process from the oxidation of one NADH. The term for this procedure is oxidative phosphorylation.