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The best way to find yourself
is to be lost in
the service of others.
Gandhi
- The Hunger Site
- The Breast Cancer Site
- The Literacy Site
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- The Rainforest Site
- The Child Health Site
- FreeRice.com
- Freekibble.com
Diffusion
Just keep going.
Everybody gets better if they keep at it.
Ted Williams
Molecules are in constant motion
- Gases - very quickly
- Liquids - quickly, but not as quickly as gases
- Solids - vibrate in place
Diffusion
- Movement of molecules
- From an area of high concentration to an area of low concentration
- Many molecules of one kind in the same space
- Into available space
- "Spread out"
- Happens naturally
Passive Transport
- Movement of molecules through a selectively permeable membrane .
- Allows some, but not all molecules through
- Selects" molecules allow through
Osmosis
- Special type of diffusion
- Diffusion of water through a selectively permeable membrane