Hm this seems potentially dangerous, doing MCAT practice I got:

  Which of the following is NOT a neurotransmitter in the central nervous system?

  serotonin
  glutamate
  acetylcholine
  dopamine

  Neurotransmitters in the central nervous system include serotonin, glutamate, and dopamine. Acetylcholine is a neurotransmitter in the peripheral nervous system.

However this is wrong. Acetylcholine is both a PNS and CNS neurotransmitter. The rest are also CNS neurotransmitters.

Here is an example of a real question that is similar but accurate: https://quizlet.com/explanations/questions/which-of-the-foll...