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A basic understanding of diffusion and osmosis
Member rating: No Rating | Words: | Submitted: Wed Jun 08 2005
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Abstract: The purpose of this lab was to have a basic understanding about concepts diffusion and osmosis. In this lab we had dialysis tube as a cell membrane of cell, which lets small particles pass through it and we had test tube as tightly joined surface, which doesn't let any particles pass through it. As a result we saw that small particles like glucose and iodine diffused through dialysis tube, but large particle like starch couldn't diffuse dialysis tube. From this lab it can be concluded that small particles like glucose and iodine can pass through phospholipid's double layer of cell membrane to provide nutrition to cell, but larger particles like starch needs to go through the entrance of cell. Introduction: Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis is the diffusion of water molecules across a selectively permeable membrane....
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