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For this coursework we are going to carry out tests to see the effects on sugar concentration on osmosis. My test subjects will be pieces of potato.

Before I begin, I will briefly explain my own understanding of Osmosis. This is a form of diffusion which occurs only in water. In this water will move from a high concentration of water to a low concentration through a partially permeable membrane until the concentration gradient is equal. Once this is balanced there will be no further net movement of water.
This shows that the transfer of water is from a high to a low concentration of water. It also shows that the solute cannot change which side of the partially permeable membrane it is on, because it is too large to pass through the membrane.

This knowledge will allow me to carry out a series of tests to investigate the affect different levels of solute will have on the speed, and quantity of water moved during osmosis.
Firstly I must decide on a suitable number f variables.......

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