Singer-Nicolson model.

Cell membrane

Figure 1.3.1 http://commons.wikimedia.org/wiki/Image:Cell_membrane_scheme.png

Figure 1.3.2 http://commons.wikimedia.org/wiki/Image:Cell_membrane_detailed_diagram_4.svg

These diagrams give an overview of the relationship between the cell and the membrane , the phospholipid bilayer and the individual phospholipid molecule.