Acetylcholinesterase is an enzyme that catalyzes the breakdown of the neurotransmitter acetylcholine. Which of the following explains why acetylcholinesterase cannot be used to catalyze the breakdown of other neurotransmitters, like norepinephrine? A. It would require a level of activation energy too high for acetylcholinesterase to react with other neurotransmitters. B. Binding with an alternate neurotransmitter would inhibit the reaction of the enzyme with acetylcholine.