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An experiment to test the effect of different temperatures on the permeability of cell membrane. Aim In this experiment, I am trying to find out how, why, and by how much does the difference in temperature affects the permeability of cell membrane of plant cells. Prediction Having done a pilot experiment and by using the scientific knowledge gathered, some predictions can be made. The permeability of cell membrane should increase as the temperature increases, and this is shown by the decrease in the percentage transmission of light on the colorimeter. As guidance, the results of the pilot experiment could be used: Readings taken from the pilot experiment Time taken(min) Temperature(°C) % Transmission of light Volume of water(ml) 20 20 96 5 20 30 81 5 20 45 70 5 20 60 48 5 Graph to show the relationship of temperature and the % transmission of light. Results similar to the pilot experiment are expected, and so at 20°C, the cell membrane is not very permeable, shown by the high % transmission of light, expected to be...

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