Question

which of the following is a common excitatory neurotransmitter that plays a role in memory?
○ glutamate
○ aspartate
○ histamine
○ phenethylamine

Explanation:

Glutamate is the main excitatory neurotransmitter in the brain and is crucial for memory processes (e.g., long - term potentiation). Aspartate has a smaller role in excitation, histamine is involved in other functions (like wakefulness), and phenethylamine is more related to mood/pleasure, not primary memory - related excitatory neurotransmission.

Answer:

A. Glutamate