Answer:
Alcohol Dehydrogenase
Step-by-step explanation:
Alcohol consumed orally is rapidly absorbed from the gastrointestinal tract. About 90 to 98% of alcohol ingested is oxidized to acetaldehyde. This oxidation occurs on two levels:
a) At the gastrointestinal level, where alcohol is oxidized by the enzyme alcohol dehydrogenase (ADH) in acetaldehyde. This enzyme, in addition to catalyzing the oxidation of ethanol, also catalyzes the oxidation of other alcohols.
b) At the hepatic level, where the main metabolism occurs, and alcohol is transformed into acetaldehyde mainly by the action of ADH, but also by the action of the microsomal oxidative system of alcohol, whose enzymes are activated to higher alcohol levels.