MDCAT Chemistry MCQ #150

A researcher is studying the metabolism of ethanol in the liver. Which enzyme is primarily responsible for the first step in ethanol oxidation?

MDCAT Chemistry MCQ #150

  1. Question 1

    Q1. A researcher is studying the metabolism of ethanol in the liver. Which enzyme is primarily responsible for the first step in ethanol oxidation?

    • A) Alcohol dehydrogenase
    • B) Aldehyde dehydrogenase
    • C) Cytochrome P450
    • D) Acetaldehyde dehydrogenase

    Answer: Alcohol dehydrogenase

    Explanation: Alcohol dehydrogenase is the enzyme responsible for the first step in ethanol oxidation to acetaldehyde. The other options describe different enzymes involved in subsequent steps or entirely different metabolic pathways.