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An investigation into the strength of solution with the same osmotic strength as a potato.
Member rating: No Rating | Words: | Submitted: Sun Dec 15 2002
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An investigation into the strength of solution with the same osmotic strength as a potato. Introduction. In order to find the water potential of a potato, I will need to look at Osmosis. Osmosis is the net movement of water from a high water potential to a low water potential through a semi-permeable membrane. The water molecules will continue to move through the semi-permeable membrane until both sides have reached a state of equilibrium. The semi-permeable membrane in this experiment will be the cell membrane of the potato cells. Cell membranes consist of a phospholipid bi-layer interspersed with proteins. This thin membrane will allow small molecules such as oxygen molecules and carbon dioxide molecules to pass through. It will also allow water molecules to pass through and this is the key in this investigation. Sucrose molecules are bigger than water molecules and will not pass through the partially permeable cell membrane, so...
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