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Problem In the following experiment I am going to try and determine- Why does raw turnip taste sweeter than raw potato I will find this out using osmosis Background Knowledge We already know that the average concentration of dissolved sugar in turnip is 062M We found this from a previous class investigation Using Osmosis which we were taught last year in school we can find out if potato contains less sugar than turnip therefore explaining why turnip is sweeter than potato If we measure the isotonic of both specimens then we can draw a graph comparing the two therefore making it a lot more easier to distinguish which has the highest concentration of dissolved sugar Plant cells have a cell surface membrane Outside this there is the cellulose cell wall Inside a plant cell there is a solution of solutes many of which can be found in the vacuole In plants water flows through the cell wall and cell surface membrane into the vacuole from the outside This causes the cell wall to swell up however the cell does not burst The cell is now fully turgid Osmosis- Osmosis is a special type of diffusion It is the movement of water molecules from an area of high concentration to an area of low concentration across a partially permeable membrane The diagram on the right represents osmosis The water molecules will diffuse into the cell where there arent as many of them The solute molecules represent the sugar molecules inside and outside the cell There are three different types of states a plant cell can be in during Osmosis They are- Hypertonic Isotonic and Hypotonic Hypertonic- When a plant loses water it becomes flaccid This always happens when the plant is put in a high concentrated water solution The inside of the cell shrinks due to water loss and pulls away from the cell wallPlasmolysed Hypotonic- When the plant is placed
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