1 / 23

Transport across Plasma Membranes

Transport across Plasma Membranes. Transport across Plasma Membranes. Transport across Plasma Membranes. Diffusion through lipid bilayer. CO2 O2 NO Steroid Hormones Monoglycerides. Diffusion through channels. Simple Diffusion. Fick’s Law. J = P.∆C P = D.A/∆X J = D.A.∆C/∆X.

rdurfee
Download Presentation

Transport across Plasma Membranes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Transport across Plasma Membranes

  2. Transport across Plasma Membranes

  3. Transport across Plasma Membranes

  4. Diffusion through lipid bilayer • CO2 • O2 • NO • Steroid Hormones • Monoglycerides

  5. Diffusion through channels

  6. Simple Diffusion

  7. Fick’s Law • J = P.∆C • P = D.A/∆X • J = D.A.∆C/∆X J = Flux (Rate of diffusion) P = Permeability D = Diffusion Coefficient A = Surface area C = Concentration X = Membrane thickness

  8. Simple Diffusion

  9. Simple Diffusion

  10. Facilitated Diffusion

  11. Facilitated Diffusion

  12. Facilitated Diffusion • Aminoacids • Glucose • Galactose • Fructose

  13. Osmosis

  14. Osmosis

  15. Osmotic pressure

  16. Van’t Hoff’s Law π = RTC π : osmotic Pressure R = Gas constant T = Absolute Temprature C = Concentration

  17. Tonicity of solution

  18. Hypotonic (cell swells) Isotonic (no change) Hypertonic (cell shrinks) Figure 25-5; Guyton and Hall

More Related