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Understanding Biological Membranes and Protein Transport Mechanisms

Explore the intricate world of biological membranes and membrane proteins, including their roles in transport, recognition, and signal transduction. Learn about passive and active transport mechanisms, osmosis, facilitated diffusion, and the significance of concentration gradients in cellular processes.

ernestwalker
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Understanding Biological Membranes and Protein Transport Mechanisms

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  1. Biological Membranes

  2. Membranes

  3. Membrane Proteins • Transport • Channels • Pumps • E- Transfer • Recognition • Antigens, glycoproteins

  4. Membrane Proteins • Structural Proteins • Attachment • Receptors • Signal Transduction • Joining Proteins • Enzymatic

  5. Movement Across Membranes • Simple Diffusion • Random Movement of Molecules • Passive transport • Concentration Gradients

  6. Movement Across Membranes • Osmosis • H2O only! • Solute Gradient • Hypertonic • Hypotonic • Isotonic

  7. Osmosis & Cells

  8. Movement Across Membranes • Facilitated Diffusion • Random Movement of Molecules • Passive transport • Concentration Gradients • Channel Proteins

  9. Movement Across Membranes • Active Transport • Energy is required … ATP • Transport Proteins (pumps) • Movement AGAINST a concentration gradient.

  10. Sodium-Potassium Pump

  11. Short Homework: • How does “Cotransport” work & where in the body would you find such a phenomenon? • Be sure site your source(s)

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