Which of the following shows ligand binding at the cell surface?

A)B
B)C
C)D
D)A

Question

Which of the following shows ligand binding at the cell surface?

A)B 
B)C 
C)D 
D)A

Quizplus · Accepted Answer

Choice B shows ligand binding at the cell surface. Specifically, the ligand (purple) is binding to a receptor protein (green) on the surface of the cell. Choice A shows a lipid bilayer with various proteins embedded in it, but does not show any ligand binding. Choice C shows an intracellular signaling pathway, but not binding at the cell surface. Choice D shows a cell undergoing mitosis, which does not involve ligand binding. Choice E shows a virus infecting a cell, which also does not involve ligand binding at the cell surface.

Which of the Following Shows Ligand Binding at the Cell