Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things...
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Transcript of Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things...
![Page 1: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/1.jpg)
Osmosis and Diffusion
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• Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)
![Page 3: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/3.jpg)
Diffusion is the movement of particles across a semi-permeable membrane
![Page 4: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/4.jpg)
Particles move from an area of higher concentration to an area of lower concentration. Generally, smaller
particles move this way, and larger particles cannot get through.
![Page 5: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/5.jpg)
Osmosis is the diffusion of water
![Page 6: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/6.jpg)
Osmosis and Diffusion are both forms of Passive Transport – they
require NO ENERGYBrainPopPassive
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In order for larger molecules to move through the membrane, or for particles to move from low to high concentration, energy is needed.
This is called Active Transport.
![Page 8: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/8.jpg)
Which way will the particles move?
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Which way will the particles move?
![Page 10: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/10.jpg)
What if they had to move the other way?
![Page 11: Osmosis and Diffusion Semi-Permeable membrane – allows some things through and keeps other things out (Also called selectively permeable)](https://reader035.fdocuments.in/reader035/viewer/2022071806/56649d055503460f949d8a43/html5/thumbnails/11.jpg)
What if they had to move the other way?
They would have to move by Active Transport and this would require energy