Extracellular messengers binding on surface receptors may exert effects on cells via all the following means EXCEPT which one
A)opening gated channels
B)opening a gated channel through activation of a G protein
C)activation of the adenylyl cyclase system
D)binding to sites and then being endocytosed

Question

Quizplus · Accepted Answer

Binding to surface receptors generally does not result in endocytosis of the messenger. The other three mechanisms are common ways in which cell signaling is carried out through extracellular messengers.

Extracellular Messengers Binding on Surface Receptors May Exert Effects on Cells