In order, from start to finish, the basic steps of a signal transduction pathway are
A) signal, responder, receptor, effects.
B) receptor, signal, responder, effects.
C) signal, receptor, responder, effects.
D) signal, receiver, responder, effects.
E) None of the above

Question

Quizplus · Accepted Answer

The basic steps of a signal transduction pathway start with a signal that is detected by a receptor. The receptor then activates a responder (such as a second messenger or a transcription factor), which ultimately results in downstream effects such as changes in gene expression or activation of enzymes. Therefore, the correct order of steps is signal, receptor, responder, effects. Option A is incorrect because the responder comes before the receptor. Option B is incorrect because the signal comes before the receptor. Option D uses the term "receiver" instead of "responder," which is not commonly used in this context.

In Order, from Start to Finish, the Basic Steps of a Signal