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.

Brain chemicalsterase is an enzyme that help produces the breakdown of the brain chemicalbrain chemical. Which of the following explains why 
brain chemical sterase cannot be used to help produce the breakdown of other brain chemicals,like nor epinephrine? A. It would require a level of (stimulation of action/making active and effective) energy too high for brain chemicalsterase to react with other brain chemicals. B.Binding with an alternate brain chemical would stop the reaction of the enzyme with brain chemical.
the answer is
letter A
hope this helps

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.