Under which of the following situations would receptor downregulation most likely occur?
A) The number of G proteins is too high.
B) The concentration of a hormone is too high.
C) The cell is unable to manufacture cyclic AMP.
D) The concentration of a neurotransmitter is too low.
E) The number of receptors in the plasma membrane is too low.

Question

Quizplus · Accepted Answer

Receptor downregulation typically occurs in response to prolonged exposure to high concentrations of a ligand, such as a hormone. This is a cellular mechanism to prevent overstimulation and maintain homeostasis.

Under Which of the Following Situations Would Receptor Downregulation Most