The basic elements necessary for a signal transduction pathway within a cell are
A) a transmembrane receptor and a response.
B) a hormone, a receptor, and a response.
C) a signal and a response.
D) a signal, a receptor, and a response.
E) a chemical signal, a receptor, and a response.

Question

Quizplus · Accepted Answer

A signal transduction pathway requires three basic components: a signal, a receptor that can detect the signal, and a response to the signal. Choice D is the best option as it includes all three components. The signal can be a chemical messenger or ligand, while the receptor can be a membrane-bound or intracellular protein that recognizes and binds to the signal. The response can be any cellular process or activity triggered by the signal-receptor interaction, such as gene expression, enzyme activation, or cytoskeletal rearrangement. Choices A, B, C, and E are all partially correct but do not encompass all three essential elements.

The Basic Elements Necessary for a Signal Transduction Pathway Within