<prompt> Acetylcholine is the neurotransmitter in the cholinergic neurons. What is the precursor that acetylcholine is derived from?DicholineTyrosineCholic acidCholine  <response>: The conversion of choline by CAT choline acetyltransferase is responsible for conveing choline to acetylcholine. Likewise, the conversion of acetylcholine back to choline is by ACH-ase acetylcholine esterase. CAT ACh-ase Choline --- Acetylcholine --- Choline 