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Biology Coursework - Year 11 Osmosis Investigation Planning Aim To investigate the effect of osmosis on pieces of potato in different concentrations of sucrose solution. Apparatus 6 Petri dishes Marker pen Beakers Stop clock Cutting tile Knife 25cm3 Measuring Cylinder Distilled water 1.0 Molar solution of sucrose Potatoes Tissue paper Mass balance Plan The factors that affect the volume of water taken in by the potato are: o The concentration of the sucrose solution that they are placed in o The size of the potato o The time the potato is left in the solution Before we started the experiment some preliminary work was done to establish the appropriate size of the potato pieces and the duration of time they were to be left in the solution. To ascertain the size of the potatoes we were to use various sizes of potato were put into the petri dish at different times, water was poured onto them until the piece investigated was completely covered. The size of the biggest piece of potato...

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