Cells (Membranes)

I. Introduction
   
II. Cell Membranes
   
     A. Functions
   
          1. Compartmentalize the cell
   
                a. Plasma Membrane
   
                b. Nuclear Envelope
   
                c. Secretion Products; Enzymes
   
          2. Regulate movement of substances
   
          3. Regulate exchange of information
   
                a. Hormones
   
          4. Sites for attachment
   
                a. Tissues
   
          5. Allow energy transduction to occur
   
                a. Senses, etc.
   
          6. Sites for biochemical events
   
                a. Photosynthesis
   
                b. Cellular Respiration
   
          7. Many other functions
   
     B. Chemical Composition
   
          1. Lipids
   
               a. Phospholipids
   

   
          2. Proteins
   
          3. Carbohydrates
   
         (4. Cholesterol)
   
     C. Structure
   
          1. Models
   
              a. Davson & Danielli (1930s)
   
                    i. Trilaminar Model
   
   
   
              b. Singer & Nicolson (1970s)
   
                    i. Fluid Mosaic Model
   
   
   
III. Summary

Page obtained from link at URL: http://www.ric.edu/faculty/jmontvilo/109.htm Prepared by Jerome A. Montvilo, Ph.D. for the use of his students. Copyright © by Jerome A. Montvilo. All rights reserved. Please send questions, comments, or suggestions to jmontvilo@ric.edu. Last updated 15 January, 2008