Osmosis Coursework

Investigating the water potential of Potato tissue. Introduction: In this investigation I aim to discover the water potential and solute potential of potato tissue. I will accomplish this by placing potato pieces of equal size into varying concentrations of sucrose solution and examining the percentage change in mass. Then I will plot my results onto a graph and work out the intercept at which the line of best fit crosses the x-axis (concentration of sucrose …

…are kept in a cool dry place. Time is another variable which needs to be controlled because it affects the amount of net movement of water which will have been allowed to have taken place. I will control the time of this experiment by using a stop watch. Fair test: This is the action that I will take to ensure that the results from this investigation are accurate and fair: *<Tab/>