Some enzymatic receptors and most G-protein-coupled receptors carry the signal molecule's message into the target cell by utilizing other substances within the cytoplasm commonly called
A)genes.
B)intracellular receptors.
C)enzymes.
D)second messengers.
E)first messengers.

Question

Quizplus · Accepted Answer

G-protein-coupled receptors and some enzymatic receptors utilize second messengers to carry the signal molecule's message into the target cell. Second messengers are small signaling molecules that amplify the original signal and activate downstream signaling pathways. Examples of second messengers include cAMP and calcium ions.

Some Enzymatic Receptors and Most G-Protein-Coupled Receptors Carry the Signal