What reaction does the coenzyme NADH, in the presence of an enzyme, facilitate?

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NADH is a reducing agent, meaning it facilitates reduction reactions. In the presence of an enzyme, it can reduce a carbonyl group (a functional group containing a carbon double-bonded to an oxygen) to form an alcohol (a functional group containing a hydroxyl group, -OH). This reduction reaction is important in many metabolic pathways, including the process of glycolysis in which glucose is broken down to produce energy.

What Reaction Does the Coenzyme NADH, in the Presence of an Enzyme