One Form of Receptor Desensitization Can Be Mediated by Negative

Multiple Choice

One form of receptor desensitization can be mediated by negative feedback involving phosphorylation of the receptor itself by a kinase activated downstream of a second messenger.The phosphorylated receptor likely:

A) would be resensitized by a kinase.
B) would activate heterotrimeric G proteins at a faster rate.
C) would be unable to bind ligand.
D) could be resistant to desensitization if Ser/Thr phosphatases were acting on the same receptor,