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MDCAT Biology QUESTION #7757
Question 1

Which neurotransmitter is hydrolyzed by the enzyme monoamine oxidase (MAO)?

  • Acetylcholine
  • Adrenaline
  • Glutamate
  • Serotonin✔️
Correct Answer Explanation

MAO breaks down monoamine neurotransmitters: dopamine, serotonin (5-HT), adrenaline, noradrenaline. Acetylcholine is broken down by acetylcholinesterase; glutamate is not a monoamine.