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Factors affecting Osmosis in Potato tissue Introduction There are many forms of diffusion; one form is osmosis, which needs little energy to occur. Osmosis is the process when water diffuses across a selectively permeable membrane to an area of high solute concentration. This can also be said that it is the movement of water molecules, from a high concentration, to an area of low concentration of water. When there is a high concentration of water, it is also called 'high water potential.' The diagram below shows a simple idea of what is meant by the process of osmosis. The small black circles in the diagram represent the water molecules, the larger represent the solute. FIG1 When plant cells are surrounded by a dilute solution, they let water into the cell, and therefore become more turgid. As the diagram shows... FIG2 When a plant cell is placed in a...

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