Daily Archives: February 26, 2009

Would you call this Osmosis?

Image Source

I found this image on Flickr – do you think they know the scientific meaning of osmosis – “movement of water through a semi-permeable membrane”?

Today we weighed our potato discs that had been placed in distilled water and concentrated sucrose solution overnight. Which samples gained weight and which lost weight? You can try this simple osmosis interactive to check your understanding of what happens to cells in hypotonic, isotonic and hypertonic solutions. Here is another great interactive animation of osmosis and passive transport in living cells.

This site has links to some excellent Biology interactives, from simple cell transport animations and mitosis to DNA replication, photosynthesis and meiosis.