Answer:
The pyruvic acid is decarboxylated
Step-by-step explanation:
The pyruvic acid is decarboxylated to form piruvate because a carboxyl group is removed in the form of CO2, and the H binds to NAD to reduce it to NADH.
The enzyme dehydrogenase catalyzes the reaction of pyruvic acid and an acetyl group, so that pyruvate binds to conenzyme A forming Acetyl COA