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Physical basis of the functioning of biological membranes.

Physical basis of the functioning of biological membranes. Transfer of water soluble molecules across cell membranes by transport proteins. Two classes of membran proteins. Comparison of passive and active transport. Examples of sbubstances transported across cell

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Physical basis of the functioning of biological membranes.

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  1. Physical basis of the functioning of biological membranes.

  2. Transfer of water soluble molecules across cell membranes by transport proteins

  3. Two classes of membran proteins

  4. Comparison of passive and active transport

  5. Examples of sbubstances transported across cell membranes by carrier proteins

  6. Bacteriorhodopsin: A carrier protein

  7. Conformational change in protein to passively carry glucose

  8. Two components of an electrochemical gradient

  9. Three ways of driving active transport

  10. Three types of transport by carrier proteins

  11. Two types of glucose carriers for transfer of glucose across the gut lining

  12. The Na-K pump

  13. The Na-K pump cycle

  14. Osmosis

  15. Avoiding osmotic swelling

  16. Carrier mediated solute transport in animal and plant cells

  17. The structure of an ion channel

  18. Patch-clamp recording

  19. Current through a single ion channel

  20. Gated ion channels

  21. Stress activated ion channels allow us to hear

  22. Distribution of ions gives rise to membrane potential

  23. K+ is responsible for generating a membrane potential Nernst equation: V = 62log10(Co/Ci)

  24. Neurons

  25. Action Potenetial

  26. Three conformations of the voltage gated Na channel ----- ----- +++++ +++++

  27. Ion Flows and the Action Potential

  28. The propogation of an action potential along an axon

  29. The Action Potential

  30. Synapses

  31. Synapses

  32. Synapses

  33. Excitatory vs. Inhibitory Synapse

  34. Synapses

  35. Ion Channels

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