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# Experiment to find out how different concentrations of sugar effect osmosis in potato cells

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Introduction

James MacDonald Experiment to find out how different concentrations of sugar effect osmosis in potato cells Aim: Devise an Experiment to determine the water potential of potato cells. Apparatus: Cork Borer Test tubes Potato Pan Balance Ruler Glucose Solution Bungs Diagram: Bung Test tube Potato Glucose Solution Variables: Temperature Concentration Method: First I will create 18 potato tubers using the cork borer and the potato. There will be 6 concentrations and each concentration will be done three times to ensure the accuracy of the results. Then I will measure them and make them all 3cm long and weigh 3.8g. ...read more.

Middle

The blunt cork borer may damage the cells around the outside of the potato tuber, there is nothing I can do to change this but it should be the same for all the potato tubers. Prediction/Hypothesis: I predict that the when the concentration of the glucose solution and the potato are equal the potato will not change in length or weight. The way osmosis works, nothing should happen when the concentrations are the same. I predict that the glucose concentration of the potato cells will be about 0.4m - 0.5m. I found this in past work. Results: Sugar Concentration Mass (g) ...read more.

Conclusion

This is because there was the least change in Mass and Length at 0.4M. This proves my prediction to be correct. The experiment works because of the way osmosis works. The experiment would still work if there was no sugar in the potato. This experiment could be used in other plants as well to find the concentration of sugar in them. The experiment was fair enough to give good results but could have been done in a more controlled way or place. None of the results were extremely anomalous but if the test went perfectly the would have gone in a straight line on a graph. The results of both Length and Mass for 0.4M were the most anomalous. ...read more.

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