Signal binding to a receptor differs from enzyme-substrate binding in that
A) in signal binding the signal is not altered during the process.
B) the single-binding process is reversible.
C) in signal binding, cell receptors can become saturated by signal molecules.
D) signal binding can be inhibited by an antagonist.
E) None of the above

Question

Quizplus · Accepted Answer

In signal binding, the signal molecule (ligand) is not altered during the process, while in enzyme-substrate binding, the substrate molecule is altered or modified by the enzyme. The other options listed (B-D) are applicable to both signal binding and enzyme-substrate binding.

Signal Binding to a Receptor Differs from Enzyme-Substrate Binding in That