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Remember solutions?

Remember solutions?. solutions. Solutions have 2 parts solutes – particles that dissolve in solvent solvent – liquid in which solutes dissolve Ex: solvent: water solute: Kool-Aid solvent: water solute: Tea, Coffee. solutions.

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Remember solutions?

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  1. Remember solutions?

  2. solutions Solutions have 2 parts solutes – particles that dissolve in solvent solvent – liquid in which solutes dissolve Ex: solvent: water solute: Kool-Aid solvent: water solute: Tea, Coffee

  3. solutions Solutions can have different concentrations, [ ] Solutions can be SATURATED * solvent cannot hold any more solute * if added, more solute will fall out of solution

  4. Cell transport Moving substances through the cell membrane

  5. Cell membrane • Fluidmosaic model – fluid: moving mosaic: design of small pieces • combination of different moveable molecules (lipids, carbs, proteins) http://www.youtube.com/watch?v=Qqsf_UJcfBc

  6. The primary component of the cell membrane

  7. Glycerol Fatty acids

  8. Glycerol Hydrophilic Fatty acids

  9. Glycerol Hydrophilic – love water Fatty acids Hydrophobic – fear water

  10. Phospholipidbilayer Outside cell: water & blood Inside cell: cytoplasm (water)

  11. I. Passive transport • Requires NO cell E • Particles pass through the c.m. w/their own kinetic E (bouncing/knocking each other through)

  12. A. (Simple) Diffusion • Movement of small, uncharged particles • O2, CO2 • Moving through phospholipidbilayer • From an area of [high] to [low] to reach equilibrium

  13. PASSIVE TRANSPORT • DIFFUSION some particles (CO2, O2),will diffuse straight through the lipid bilayer

  14. [Hi] This represents a [ ] gradient [Lo]

  15. [Hi] What will happen? [Lo]

  16. [Hi] Is it finished? [Lo]

  17. NO!

  18. [equilibrium]

  19. Moving down the gradient

  20. B. Facilitated Diffusion • Movement of small particles that have a charge or are slightly larger than O2, CO2 Ex: glucose, water • Move through specific protein channel/carrier • From an area of [high] to [low] to reach equilibrium

  21. Cell membrane: Proteins • Embedded PROTEINS

  22. Cell membrane: Proteins • Embedded PROTEINS

  23. PASSIVE TRANSPORT • DIFFUSION other particles (ex: glucose) will have to pass through the protein channels

  24. C. Osmosis (facilitated diffusion) • Movement of water • Moving through special protein channel, aquaporin • From an area of [high] of water to [low] of water to reach equilibrium

  25. comparing a cell to surrounding solution

  26. comparing a cell to surrounding solution H2O H2O H2O H2O H2O H2O

  27. This is how cells are affected Lyse Normal Plasmolyzed Turgid/turgor pressure

  28. osmosis

  29. Osmosis lab…

  30. https://www.youtube.com/watch?v=Fh7UvXEP_jo

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