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Osmosis in Potatoes
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Biology Investigation Osmosis in Potatoes OBSERVATION- I have observed that when a potato cylinder is left in water for a period of time the cylinder becomes larger and firmer. When an identical cylinder is left in sugar solution the potato becomes softer and smaller. HYPOTHESIS- I think that the potato cylinder is becoming turgid because it is absorbing water by osmosis; through it's semi-permeable cell membrane. I think that the second cylinder is losing water by the same method; the water inside the cylinder is being absorbed through the semi-permeable cell membrane by the sugar solution, which results in the potato being left soft and slightly withered. KEY FACTORS- Temperature- If the potato cylinder becomes too cold then it may freeze and then water would not be able to enter through the membranes. However if it gets too warm then the potato may shrivel in the solutions, if the temperature gets very hot then the potato may...
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