Term Paper on "Diffusion and Osmosis Experiment Lab"

Term Paper 5 pages (1863 words) Sources: 5

[EXCERPT] . . . .

This is due to the fact that the concentration of water inside the egg was less, and water flowed inside the egg from a region of higher concentration towards lower concentration. The egg present in O.5M glucose solution also gained mass as water flowed in the egg through the cell-membrane. This is due to the fact that the solution was hypotonic, and the concentration of water was higher outside the egg in comparison with its inside (Jeff, 2005). The egg in 1.5M glucose solution did not undergo any change in its size. This happened due to the fact that the concentration of water inside the egg and in the solution was the same. The egg present in 2M glucose reduced its size due to the fact that the concentration water inside the egg was higher than the solution, and thus the flow of water took place from the egg in to the 2M glucose solution.

Conclusion

The experiment conducted demonstrated the principle of osmosis and the effect of varying solution concentration on the process of osmosis and the size of eggs placed in the solutions. The experiment proved our first hypothesis wrong, as the size of the egg increased when placed in water. The size of the eggs increased due to the absorption of water by them. Our second hypothesis was correctly verified in the experiment as the size of egg also increased in this case due to water absorption as 0.5M solution was hypotonic. Our third hypothesis that size of egg will decrease in 1.5M solution proved wrong, as the mass of the egg remained the same during the observations taken at each interval, indicating that 1.5M solution was an isotonic one. Our fourth hypothesis was proved correct as the size of the egg decreased in 2M glucose solution as the solution was hypertonic. The experiment was thus successful in presenting the effect of varying concentration solution on osmosis.

References

Jeff, Sack. Osmosis and Diffusion, American Biology Teacher, 67.5 (2005), pp. 3-11, Retrieved

October 19, 2012, from http://www.eric.ed.gov/ERICWebPortal/search/detailmini.jsp?_nfpb=true&_&ERICExtSearch_SearchValue_0=EJ725843&ERICExtSearch_SearchType_0=no&accno=EJ725843

Lauren, M., Victor, S. & Lindsay, M. Exploring Osmosis and Diffusion in Cells: A

Guided-Inquiry… READ MORE

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