Question

multiple choice question
what is the immediate result of stimulating a receptor?
the receptors membrane potential changes.
the stimulus immediately becomes less intense.
the shape of the receptor cell changes.
the receptor becomes unresponsive to any stimulus.

Explanation:

When a receptor is stimulated, ion - channels open or close, leading to a change in the membrane potential (receptor potential). This is the immediate event. The stimulus intensity doesn't immediately decrease, the cell shape change is not the immediate result, and the receptor doesn't become unresponsive right away.

Answer:

The receptor's membrane potential changes.