AP Psychology / Biological Bases of Behavior
Lesson
Neurotransmitters
Chemical messengers at the synapse.
Explanation
Neurotransmitters are chemical messengers released at synapses. Different neurotransmitters are associated with different functions, and the effects of a neurotransmitter depend partly on the receptors involved.
Practice
Original Marlow Works items. Check the answer explanation after you try.
A medication blocks reuptake of a neurotransmitter in the synapse. What is the most likely immediate effect?
Original Marlow Works item — not a College Board question.
Take your time—this is practice, not a test.
Related resources
External links with reuse status. Marlow Works is independent and does not copy restricted exam or textbook material.
Official / link only
AP Psychology course page
Official five-unit framework and science practices.
College Board · All rights reserved · accessed 2026-10-01
Open sourceReference only — do not copy
OpenStax Psychology 2e
Useful psychology background, but current publisher terms restrict commercial reuse and AI ingestion.
OpenStax · CC BY-NC-SA 4.0 with additional restrictions · accessed 2026-10-01
Link only. Do not republish or ingest this book.
Open source