Final answer:
The enzyme alcohol dehydrogenase is located in the stomach and liver. It catalyzes the oxidation of ethanol to acetaldehyde, NADH, and H+ ions. Acetaldehyde is further metabolized into acetate by another enzyme called acetaldehyde dehydrogenase to protect the liver cells.
Step-by-step explanation:
The enzyme alcohol dehydrogenase is located in the stomach and liver.
About 80 to 90% of the total hepatic ethanol uptake is processed via the alcohol dehydrogenase system in the liver. The enzyme catalyzes the oxidation of ethanol to acetaldehyde, NADH, and H+ ions. Acetaldehyde is further metabolized into acetate by another enzyme called acetaldehyde dehydrogenase to protect the liver cells.