Up-regulation
A) results in a decrease in the number of receptor sites in the target cell.
B) produces an increase in the sensitivity of the target cell to the hormone.
C) is found in target cells that maintain a constant level of receptors.
D) produces insensitivity to the hormone in the target tissue.
E) moves the receptors up on the membrane.

Question

Quizplus · Accepted Answer

Up-regulation increases the number of receptor sites on the target cell, making the cell more sensitive to the hormone. This process does not decrease receptor numbers, maintain constant levels, produce insensitivity, or physically move receptors up on the membrane.

Up-Regulation