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Investigating osmosis Aim: I am going to investigate the mean water potential of potato cells to the point of equilibrium by putting pieces of potato into different concentrations of sucrose solution and recording the change in mass. Prediction: I predict that potatoes immersed in solutions with a water potential lower than (i.e. more concentrated) that of the potato cells, will decrease I mass after being left for a period of time. The potatoes will decrease in mass as water has moved out of the cells through a partially permeable membrane by osmosis. The potato will become flaccid and is said to be plasmolysed. Potato immersed in solutions with higher water potential than that of the cells (i.e. more dilute) will increase in mass (after being left for a period of time) because water has moved into the cell through a partially permeable membrane by osmosis. The potato will become turgid. There will be...

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