Which of the following are common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response?
A) opening or closing of specific channels to regulate ionic movement across the plasma membrane.
B) activation of an intracellular second messenger system.
C) alteration of protein shape and function as a result of phosphorylation.
D) only (a) and (b) above.
E) all of these answers.

Question

Quizplus · Accepted Answer

All of the choices mentioned are common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response. The opening or closing of specific channels to regulate ionic movement across the plasma membrane, activation of an intracellular second messenger system, and alteration of protein shape and function as a result of phosphorylation are all mechanisms that can be used by a cell to respond to a chemical messenger.

Which of the Following Are Common Means by Which Binding