Tutorial to help answer the question

Which component of a cell membrane is likely to function as a receptor in cell to cell signaling?

A.	lipids
B.	proteins
C.	carbohydrates
D.	cholesterol

Tutorial

Protein receptors

Review the tutorial for question 1. The functional component of the cell membrane is the protein. Protein receptors receive signals from the outside of the cell and can then cause changes inside the cell. This important topic is the subject of another tutorial.

Graphic of Fluid Mosaic Model for Cell Membrane