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Investigating the density of blood Introduction I will investigate the relative density of three unknown blood samples by measuring the time taken for drops of simulated blood to fall under gravity through a solution of copper II sulphate. By comparing the two samples I can determine the relative density of them compared to the normal sample. There are three separate samples of simulated blood and each one will be tested. 1. Sample 1 will be from a healthy male 2. Sample 2 will be from the same male after 6 months of regular exercise. 3. Sample 3 will be from the same male after suspected blood doping. By analysing the results obtained I should be able to determine the relative density of the blood. Background scientific knowledge and understanding I would expect an average healthy male to contain 5-7 litres of blood. Each drop of blood would contain * 250 million red blood cells * 400,000 white blood cells * and...

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