Signal transduction pathways
A) are activated by binding a ligand to its receptor molecules
B) transmit the environmental signal to intracellular effector molecules
C) are comprised of many different types of relay molecules
D) All of the choices are correct.

Question

Quizplus · Accepted Answer

All of the choices are correct. Signal transduction pathways are activated by the binding of a ligand to its receptor molecule, which then transmits the environmental signal to intracellular effector molecules. The pathway is comprised of many different types of relay molecules, which signal the response to the appropriate cellular components.

Signal Transduction Pathways