The primary use of a labeled cell membrane diagram is for education. For students who are new to cell biology, a basic diagram demonstrating the structure of a phospholipid bilayer is very useful in understanding how cells maintain a distinctiveness from one another.
For more advanced students of cell biology, diagrams are also useful for understanding the function and positioning of such structures as globular proteins, peripheral proteins and alpha-helix proteins. These diagrams are also useful for understanding the complexities of active and passive transport, exocytosis and endocytosis, diffusion of gases, signalling, enzyme activity and cell-to-cell recognition. A good diagram also helps students understand how the cytoskeleton can attach to the cell membrane.