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Biology Coursework Osmosis and potato cores 11/16/2007 Alex Tanner BIOLOGY COURSEWORK How is osmosis affected by the concentration of salt that we use? INTRODUCTION We are carrying out an investigation to see how the concentration of water will affect osmosis within a potato core. We were given a choice whether to decrease the water concentration with a salt or sugar solution, we thought; it was easier to work with salt solution though as the sugar solution became sticky when we decreased the water solution. I will use two sets of results to see how an increase in salt solution affects osmosis. STRATEGY We will use potatoes to show that osmosis is occurring, we have to use the same potatoes as water density's may change as will other things if you vary between potatoes, we will place a 4cm long core of potato (from the same potato) into different concentration of salt in water. Before the potato is placed...

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