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A Sc1 Investigation into the effect of Concentration on Osmosis:
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| Submitted: Thu Jul 11 2002
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A Sc1 Investigation into the effect of Concentration on Osmosis: PLANNING Aim: The aim of this investigation is to see how changing the concentration of salt in a solution will affect osmosis in potatoes. Background: All living organisms have certain requirements that must be satisfied in order for the organisms to remain alive (e.g. CO2, O2, H20 are all vital requirements). The majority of these substances are received by diffusion e.g. in gaseous exchange (in humans) O2 and CO2 diffuse into and out of the lungs. Osmosis is a special type of diffusion. Osmosis is the movements of water molecules from an area of high water potential to an area of low water potential via a semi-permeable membrane; this is a process that works in all living cells. E.g. as shown below, the water molecules move from an area of the highest water potential (HWP= a high concentration of water molecules, i.e. pure water...
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