Osmosis Investigation
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Introduction Osmosis is defined as the diffusion of water molecules, down a water potential gradient, across a partially permeable membrane. If the solutions on each side of the partially permeable membrane are equally concentrated then there will be no net movement of water across the membrane. If the solution outside the cell has a low concentration of solute, this causes cells to become turgid as water flows into them, or if the solution outside the cell is of high concentration the cells become plasmolysed as the water flows out. Aim The aim of this investigation is to...
Use a wider range of sucrose solutions.
Use a wider range of sucrose solutions.
?é?À When the potato was dried to remove surface liquid it was not necessarily done the same on each potato, allowing some to weigh more.
?é?À Although the osmotic potential for this investigation was estimated, a more scientific approach would have been better.
?é?À Selecting a better root vegetable to see how the results differ.
These points can all be taken into consideration for a re- test, but I believe this experiment went well and we obtained the results that proved my hypothesis and prediction.
Prediction I predict that the more catalase used will speed up the reaction rate between the catalase and hydrogen peroxide. On a graph, as the concentration of catalase is increased the rate of reaction will increase forming a series of positively correlated lines, increasing in gradient as the catalase...
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Crop rotation is the practice of growing a series of dissimilar types of crops in the same space in sequential seasons to avoid the buildup of pathogens and pests that often occurs when one species is continuously cropped. Crop rotation also seeks to balance the fertility demands of various...
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Planning Before actually planning the experiment, I have done some research to find out about osmosis, and matters related to it, so that I can make predictions. And figure out a way to make this investigation fair and safe. Planning ahead would help me find out how...
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What feature do you expect to find in most clover on a school field? Prediction: Variation is in people and all other living things, they vary in many ways. No two living things are exactly the same; even twins. Humans; for example, all have the same...
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