Lab Report on Osmosis and Diffusion

Feb 3rd, 2012
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7 page Biology Lab Report on Osmosis and Diffusion with data

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Student BasharLab Report on Osmosis and Diffusion March2,2015Introduction Diffusion and osmosis are interconnected concepts, which are associated with the dynamic movement of the constituents from areas of high concentration to areas of low concentration. The only difference is that the diffusion process is based on the movement of various chemical components from one area to another; while osmosis implicates the movement of water across a membrane. Thus, osmosis process is strictly associated with the aqueous solutions.Both diffusion and osmosis processes take place due to a constant motion of a substance molecules as a result of their kinetic energy of random motion. However, in the case of osmosis two aqueous solutions of a different concentration are separated by a semi-permeable membrane. Usually, such membrane is only permeable to the smaller solvent molecules, while the larger solute molecules are unable to cross the semi-permeable membrane. Osmosis plays a vital role in biological processes where the solvent is water. Both single-cell and multi-cell organisms are greatly dependent on the transport of water and other molecules across biological membranes. Essentially, the energy that is responsible for such substance molecules movement is closely associated with an osmotic pressure. A solution that contains a higher solute concentration relatively to one with a lower solute concentration is called a hypertonic solution. Contrariwise, a solution that contains a l

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