Investigating Osmosis in Potato Cells :: Papers

Investigating Osmosis in Potato Cells Planning Aim- To look into the effect of different concentrations of sucrose solution, on potato booths Osmosis- Osmosis is the passage of higher(prenominal) pissing concentration through a semi-permeable membrane to a theatrical role of low piddle concentration, i.e. the passage of urine. Explanation of osmosis For osmosis to occur there moldiness be semi-permeable membranes are very thin layers of material ( kiosk membranes are semi-permeable) which concede some things to pass through them but prevent other things from musical passage through. Cell membranes ordain allow small molecules worry Oxygen, water, Carbon Dioxide, etcetera to pass through. Cell membranes will not allow larger molecules like Sucrose, etc. to pass through. Regions of high concentrated water are either a very dilute solution of something like sucrose or pure water. In each theme there is a striation of water, there is a high concentration of water. Regions of low concentrated water are a concentrated solution of something like sucrose. In this case there is much less water. If the solution surrounding the cell has a higher water concentration than the cell, the cell will gain water by osmosis. Water molecules are free to pass across the cell membrane in twain directions, but more water will come into the cell than will leave. The cell is likely to swell up and become turgid. If the solution is exactly the same water concentration as the cell there will be no movement of water across the cell membrane. Water crosses the cell membrane in some(prenominal) directions, but the make sense going in is the same as the amount going out. The cell will stay the same size. If the solution has a lower concentration of water than the cell the cell will escape water by osmosis. Again, water crosses the cell membrane in both directions, but this time more water leaves the cell t han enters it. Therefore the cell will shrink and become flaccid Potato plant cells- Plant cells continuously have a strong cell wall covering them.