Question

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

Explanation:

When a receptor is stimulated, it leads to a change in its membrane potential, known as a receptor - potential or generator potential. This is the immediate event. Other options are incorrect as the receptor doesn't become unresponsive right away, the cell shape change is not the immediate result, and the stimulus intensity doesn't immediately decrease.

Answer:

The receptor's membrane potential changes.