Cell Membrane

Membrane Parts	Function
Phospholipid Bilayer	Barrier for cell
Channel Protein	Channels certain molecules into cell
Carrier Protein	Moves molecules from high to low concentration
Cell Recognition Protein	Recognizes other cells which helps alert to foreign molecules
Receptor Protein	Connects internal and external environment of cell to sense surroundings
Enzymatic Protein	Produces enzymes to synthesize substances for cell

http://www.biologycorner.com/resources/cell_membrane.jpg

http://www.biologymad.com/cells/cellmembrane.htm

http://sun.menloschool.org/~cweaver/cells/c/cell_membrane/fluid_mosaic.jpg

http://en.wikipedia.org/wiki/Protein_Function_in_Cell_Membranes