A good analogy for the way in which a neurotransmitter binds to receptor sites is
A) the opening and closing of a window.
B) a key fitting in the lock of a door.
C) the lowering of a drawbridge.
D) the pulling of the trigger of a gun.

Question

Quizplus · Accepted Answer

A neurotransmitter binding to a receptor site is often described as a key fitting into a lock. This is because specific neurotransmitters are designed to fit into specific receptor sites, much like a key is designed to fit into a specific lock. Once the neurotransmitter binds to the receptor site, it can either activate or inhibit the neuron's activity, just like a key can either open or close a lock.

A Good Analogy for the Way in Which a Neurotransmitter