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Osmosis in Potato Tubes Osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a high concentration to a low concentration. Diagram: Aim: To see the effects of different concentration of sugar solution on Osmosis in potato tubes. Key factor: In the investigation we change the sugar solution from: 0%-10%-20%-30%-40%-50% this is the independent variable; the dependant variable is the change in mass. Prediction: I predict that all the potato tubes in pure water or low concentration sugar solution will swell because water enters their cells by osmosis. The potato tubes in higher concentration sugar solution will shrink because water leaves their cells due to osmosis. Equipment list: * Cork borer * Potato * Sugar solutions - 0%, 10%, 20%, 30%, 40%, 50%. * 6 Test tubes * Test tube rack * Scalpel * Stopwatch * Measuring cylinder Fair test: To make our experiment a fair test me need the same: * Lengths of potatoes. * Amount of...

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