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Cell Membrances

Cell Membrances. Structure, Function and Chemistry. Chemical Composition . What biological molecules make up cell membranes?. Chemical Composition. What are the roles of proteins in the membrane?. Chemical Composition. What types of lipids are found in membranes?. Chemical Composition.

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Cell Membrances

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  1. Cell Membrances Structure, Function and Chemistry

  2. Chemical Composition • What biological molecules make up cell membranes?

  3. Chemical Composition • What are the roles of proteins in the membrane?

  4. Chemical Composition • What types of lipids are found in membranes?

  5. Chemical Composition • Where in membranes are carbohydrates found?

  6. Membrane Structure • What did Overton and Langmuir contribute to our understanding of membrane structure?

  7. Membrane Structure • How did the work of Gorter and Grendel modify our understanding of membrane structure?

  8. Membrane Structure • What did Davson and Danielli and Robertson add to our knowledge of membrane structure?

  9. Membrane Structure • Why was it necessary to come up with still another model of membrane structure?

  10. Membrane Structure • What were some of the majors features of the fluid-mosaic model?

  11. Membrane Structure • In what major way was the fluid mosaic model different from previous models?

  12. Membrane Lipids • What kinds of phospholipids are found in membranes?

  13. Membrane Lipids • What are cerebrosides and gangliosides and where are they found?

  14. Membrane Lipids • What kinds of sterols are found in membranes?

  15. Membrane Lipids • What are hopanoids?

  16. Membrane Lipids • What do we know about the fatty acids found in membranes?

  17. Membrane Lipids • What kinds of movements can membrane lipids undergo?

  18. Membrane Lipids • How does temperature affect the fluidity of membranes? • What other factors influence membrane fluidity?

  19. Membrane Lipids

  20. Membrane Lipids • What influence does cholesterol have on membrane fluidity?

  21. Membrane Lipids • What is homeoviscous adaptation and why is it important?

  22. Membrane Proteins • What is the difference between integral, peripheral and lipid-anchored proteins?

  23. Membrane Proteins • What was Henderson’s and Unwin’s contribution to our knowledge of membrane structure?

  24. Membrane Proteins • What is freeeze-fracture analysis?

  25. Membrane Proteins • What is hydropathy analysis and how is it used?

  26. Membrane Proteins • What peripheral proteins exist in membranes?

  27. Membrane Proteins • Why do we considered lipid-anchored proteins in a separate category?

  28. Membrane Proteins • What technique has been used to isolate and identify membrane proteins?

  29. Membrane Proteins • How can we determine whether a protein in exposed to the inner or outer surface of the plasma membrane?

  30. Membrane Proteins • How are carbohydrates attached to membrane proteins?

  31. Membrane Proteins • What kinds of carbohydrates are attached to proteins?

  32. Membrane Proteins • What is the glycocalyx and where is it found? • What is the role of membrane bound carbohydrates?

  33. Membrane Proteins • What experimental evidence supports the concept of protein mobility in the membrane?

  34. Membrane Proteins • What factors restrict the mobility of membrane proteins?

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