1 / 15

Passive Transport

Passive Transport. Diffusion Osmosis Facilitated Diffusion. Diffusion Lab - Materials. Diffusion Lab - Procedure . Passive Transport. Main Idea. Three Types. Diffusion Osmosis Facilitated Diffusion. Does NOT use the cell’s energy to move materials in and out of the cell. Diffusion.

kyrie
Download Presentation

Passive Transport

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. Passive Transport Diffusion Osmosis Facilitated Diffusion

  2. Diffusion Lab - Materials

  3. Diffusion Lab - Procedure

  4. Passive Transport Main Idea Three Types Diffusion Osmosis Facilitated Diffusion • Does NOT use the cell’s energy to move materials in and out of the cell

  5. Diffusion • Remove the Lid • Passive Transport: Diffusion • How Diffusion Works

  6. Diffusion • The net movement of substances from areas of high concentration to areas of low concentration • A concentration gradient is the difference in concentration between two areas

  7. Diffusion

  8. Diffusion • When a substance has evenly dispersed, it has reached equilibrium • In equilibrium, there is no longer a concentration gradient

  9. Diffusion Across Membranes PERMEABLE MEMBRANES SEMI-PERMEABLE MEMBRANES Diffusion only occurs with someparticles if there is a concentration gradient Particles diffuse until equilibrium is reached • Diffusion occurs if there is a concentration gradient from one side of the membrane to the other • Particles diffuse until equilibrium is reached

  10. Diffusion Across Membranes DEPENDS ON… EXAMPLES Cell Wall Cell Membrane Window/Door Screen Coffee/Tea Filter Contact Lenses • Particle Size • Saturation (concentration gradient) • Particle Charge

  11. Diffusion Lab - Materials

  12. Diffusion Lab - Procedure

  13. Diffusion Lab – Cell Model • Cell Membrane – Plastic Bag • Cytoplasm – Cornstarch • Water-Iodine Solution – Cell’s Environment

  14. Diffusion Lab - Observations

  15. Diffusion Lab - Analysis • The cell membrane is semi-permeable because it only allowed certain particles to pass through • Iodine diffused into the cell • Cornstarch did not diffuse out of the cell

More Related