2. When a molecule of NAD+ (nicotinamide adenine dinucleotide) gains a hydrogen atom (not a proton), the molecule becomes _____. A) dehydrogenated B) oxidized C) reduced D) redoxed
NAD+ is an oxidizing agent which accepts electrons from other molecules and becomes reduced.
When NAD+ is reduced, NADH is formed, which can then be used as a reducing agent to donate electrons. The electron transfer reactions are the main function of NAD.
NAD+ accepts a hydrogen ion (H+) and two electrons (2e−), as it becomes reduced to NADH + H+.
