What Type of Membrane Proteins Allow Cells to Identify One

Question

What type of membrane proteins allow cells to identify one another?
A) enzymes
B) carrier proteins
C) channel protein
D) receptor proteins
E) marker molecules

Accepted Answer

Marker molecules are membrane proteins that allow cells to identify one another. They are often glycoproteins or glycolipids that protrude from the cell surface and are involved in cell recognition and cell-to-cell communication. Enzymes, carrier proteins, channel proteins, and receptor proteins have different functions in the cell membrane.