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The aim of this experiment is to show how osmosis works in a plant cell.

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Introduction

Osmosis Experiment Aim: The aim of this experiment is to show how osmosis works in a plant cell. Plan: Method The ways we will do this experiment is firstly by getting a beaker and put a 100ml of water in it, then get a visking tube and put it in the beaker, so we don't block the holes with natural grease on our hands. After, we will get another beaker and pour some 1% sugar solution in it. When we have done this, we get one end of the visking tube and 'ruffle' it, then we get some string and one person will tie the end of the tube, while the other person hold it. The visking tube then will go back in the water, while we get a dropper and the beaker of sugar solution. After we will use the dropper to slowly and neatly pour the 1% sugar solution in the visking tube; we will fill it up 3/4 of the way. ...read more.

Middle

Also, if we managed to do both concentrations of sugar solutions- I would have predicted that the 10% sugar solution visking tube would have increased in mass more than the 1% solution visking tube. Prediction: Theory The experiment shows how osmosis works in plant cells as, the visking tube represents plant cells, which have a partially permeable membrane and they store glucose-which is a sugar, made from photosynthesis. Also around the cells water is bought up-to be provided to the cells. The experiment setup is a bit like the conditions in plants. The mass increases in the visking tube as osmosis takes place. Osmosis is the diffusion or movement of water particles through a partially permeable membrane from a region of high water concentration to a region of low water concentration. The visking tube has a selectively partially permeable membrane, -meaning it lets certain particles through and not others, the water particles can pass through in both directions, but just like the glucose in plant cells, the sugar particles can't pass through the membrane, meaning they can't diffuse so the water particles use osmosis to find the balance of concentrations. ...read more.

Conclusion

very good to show how osmosis work in plant cells, as the setup showed the conditions well and it proved good and accurate results. Also, you could see the difference easily and it helped me understand the theory better. Although it is an experiment which can easily go wrong and it is tricky to do, especially tying the string on the tube's ends. I think the results this experiment produced was fairly accurate, as the prediction did work and it showed an increase in mass, but I don't think it produces perfect results, as some liquid could leak. If I was to improve this experiment in any way, I would try to do the 10% sugar solution visking tube. Also, I would repeat the experiment more times and try to record the results over a longer period of time. I would do these to have more reliable results and I could do more things with them. Overall, I think this experiment was effective and it helped me understand osmosis a lot better. By, Garima Charan 10 T1 ...read more.

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