Of the Following Functions, Which Is Most Important for the Glycoproteins

Multiple Choice

Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes?

A) facilitated diffusion of molecules down their concentration gradients
B) active transport of molecules against their concentration gradients
C) maintaining the integrity of a fluid mosaic membrane
D) maintaining membrane fluidity at low temperatures
E) a cell's ability to distinguish one type of neighboring cell from another