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Investigation, to find the concentration of Potato Cell Sap Part 1; Preliminary work and background information which will help me to plan my investigation; The definition of Osmosis Water molecules in a high concentration travel through partially permeable cell membrane to a lower concentration of water molecules. (So water travels from a solution to a strong solution resulting in the dilution of the strong solution). A partially permeable membrane has small pores, which allow small molecules of water to pass through, but bigger solute molecules will not. NB A solution consists of water and solute, e.g. a sucrose solution has water molecules and the solute has sucrose molecules. In Osmosis, water molecules move from where there is a lot to where there are few water molecules, so the water movement is down a concentration gradient. No energy is required. Applied information on Osmosis Water is the weakest solution. It is weaker than the cell sap...

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