Sunday, December 5, 2010

Osmosis and Diffusion(blogg 6)

Diffusion is the movement of molecules from a higher concentration to a lower condentration. Osmosis is when water is separated by a selectively permeable membrane this is a special type of diffusion. In our our lab the purpose of our experiment was to demostrate diffusion across a semi-permeable membrane,measure the effects of various concentrations of solute on the process of omosis, differentiate between hypotonic, isotonic,and hypertonic environments, measure and calculate water potential, and examine the effects of osmosis on plant cells. For this experiment  we used a potato and a onion to show omosis and diffusion. We also learned the process of dialysis tubing which is when you use a dialysis tube as your permeable membrane...the end

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