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Multiple Choice
Which statement is correct regarding the metabolism of alcohol in the human body?
A
Alcohol is metabolized in the kidneys by the enzyme urease.
B
Alcohol is primarily metabolized in the liver by the enzyme alcohol dehydrogenase.
C
Alcohol is metabolized in the lungs by the enzyme catalase.
D
Alcohol is metabolized in the stomach by the enzyme pepsin.
Verified step by step guidance
1
Identify the primary organ responsible for alcohol metabolism in the human body. The liver is the main organ where alcohol is metabolized.
Recognize the key enzyme involved in the metabolism of alcohol. Alcohol dehydrogenase is the enzyme that primarily catalyzes the conversion of alcohol to acetaldehyde in the liver.
Understand that other organs and enzymes mentioned, such as the kidneys with urease, lungs with catalase, and stomach with pepsin, are not primarily involved in alcohol metabolism.
Clarify the role of alcohol dehydrogenase: it oxidizes ethanol to acetaldehyde, which is then further metabolized to acetic acid by aldehyde dehydrogenase.
Conclude that the correct statement is that alcohol is primarily metabolized in the liver by the enzyme alcohol dehydrogenase, distinguishing it from the incorrect options provided.