When a Hormone Binds to a Membrane-Bound Receptor

Question

When a hormone binds to a membrane-bound receptor,
A) membrane channels are destroyed.
B) cyclic GMP might be produced to act as an intracellular mediator.
C) the nucleus is phosphorylated to prevent G-protein activation.
D) messenger RNA is formed.
E) cellular DNA is altered.

Accepted Answer

When a hormone binds to a membrane-bound receptor, it can activate a signaling pathway involving the generation of cyclic GMP, which can act as an intracellular mediator. The other options are not true. Membrane channels are not destroyed, the nucleus is not phosphorylated to prevent G-protein activation, messenger RNA is not immediately formed, and cellular DNA is not directly altered.