When Acetylcholine Binds to Its Receptors on the Motor End

question 134

Multiple Choice

When acetylcholine binds to its receptors on the motor end plate, it triggers a(n) _______ in the postsynaptic membrane.

• A) influx of acetylcholine
• B) influx of K⁺
• C) concentration gradient
• D) action potential
• E) graded potential

---

Definitions:

Negatively Charged

Having more electrons than protons, resulting in a net charge that is less than zero.

Protein Anions

Negatively charged proteins that play various roles in cellular functions, including maintaining cell structure and function.

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, controlling the passage of substances in and out.

Concentration Gradient

The variation in the distribution of molecules or ions across a space or membrane, which often dictates the direction of particles’ movement (e.g., high to low concentration).