IB Biology International School of Toulouse Name ________________________________ Centre No: 1203 Date ______________ Investigation of the Factors which affect Osmosis Introduction You have already studied osmosis a little with respect to cell membranes in topic 1. You should also be able to define Osmosis and you should have an idea of the factors which may affect the rate of osmosis. You may remember having carried out experiments using visking tubing and potato chips in salt solutions of different concentrations. You may also remember how to carry out the calculation of the “rate” of a process. More generally you should by now have an understanding of the scientific method (the importance of hypothesis testing, replicates, independent and dependent variables, controls, sampling techniques) All of this will help you during this investigation. Research Question: What are the factors which affect the rate of osmosis? Plan an investigation of one factor. Remember to choose apparatus carefully and design a “scientific” experiment.