Receptor Molecules on the Surface of a Cell

Question

Receptor molecules on the surface of a cell
A) determine that cell's response.
B) may allow a particular ligand to bind.
C) bind to all ligands.
D) determine that cell's response and may allow a particular ligand to bind.
E) determine that cell's response and bind to all ligands.

Accepted Answer

Receptor molecules on the surface of a cell may allow a particular ligand to bind and determine that cell's response. Therefore, both options A and B are correct, making D the best choice. Option E is incorrect because receptors do not bind to all ligands, but rather, they have specificity for certain ligands.