A scientist labels ACh with fluorescent dye to be able to visualize under the microscope where ACh travels and binds.She takes an image of the motor end plate and see that ACh is
A)bound to muscarinic receptors at the end plate.
B)inside the muscle cell sarcoplasm.
C)bound to acetylcholinesterase in the end plate membrane.
D)bound to receptors on the sarcoplasmic reticulum.
E)bound to Ca²⁺ ions.

Question

Quizplus · Accepted Answer

Acetylcholine (ACh) binds to acetylcholinesterase in the end plate membrane where it is broken down, which is a key step in the process of neurotransmission at the neuromuscular junction.

A Scientist Labels ACh with Fluorescent Dye to Be Able