Chapter 4: Cell Membrane and Cell Surface I. Cell Membrane II. Cell Junctions III. Cell Adhesion IV . Extracellular Matrix http:/I. Biomembranes: Their Structure, Chemistry and Functions Learning objectives:1. A brief history of studies on the structrure of the plasma membrane2. Model of membrane structure: an experimental perspective3. The chemical composition of membranes4. Characteristics of biomembrane5. An overview of the functions of biomembranes 1. 1. A brief history of studies2. on the s