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Rina Bhudia Mr. Conniff 10B3 Osmosis Investigation Aim: To investigate the effect of concentration of sucrose solution on potato cells. Background Knowledge: Osmosis is the passage of water molecules from a weaker solution into a stronger solution, through a partially permeable membrane. In this case, the tiny holes in the membrane of the potatoes will allow the water molecules to pass through in and out of the solution and the potato, depending on the concentration gradient of the two substances. Plant cells have a cell wall surrounding them, this is very strong. When they take in water by osmosis they begin to swell, but the cell wall stops them bursting. Plant cells become swollen and hard when they are put in dilute solutions. The pressure inside the cell will rise and eventually is so high no more water can enter the cell. This works against osmosis. But being like this is very important to plants,...

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