What do the electrons added to NAD plus do?

Electrons added to NAD+ (Nicotinamide adenine dinucleotide) reduce it to NADH, a crucial coenzyme in cellular metabolism. This reduction process allows NADH to carry high-energy electrons from metabolic reactions, particularly during glycolysis and the citric acid cycle, to the electron transport chain. In this chain, NADH donates its electrons, ultimately facilitating ATP production through oxidative phosphorylation. Thus, NADH plays a vital role in energy transfer within cells.