Which of the following are ways in which binding of an intercellular chemical messenger with a cell's receptor can bring about a cellular response?
A) opening or closing of specific ionic channels in the plasma membrane
B) activation of an intracellular second-messenger system
C) promoting or inhibiting the transcription of genes that code for the synthesis of cellular proteins
D) activating or inhibiting intracellular enzymes
E) All of the choices are correct.

Question

Quizplus · Accepted Answer

All of the choices listed are ways in which intercellular chemical messengers can bring about a cellular response. Binding of a chemical messenger with a specific receptor can trigger various intracellular signaling pathways that lead to the opening or closing of specific ionic channels, activation of an intracellular second-messenger system, promotion or inhibition of gene transcription, and activation or inhibition of intracellular enzymes. The precise response will depend on the type of messenger, the receptor, and the target cell.

Which of the Following Are Ways in Which Binding of an Intercellular