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How does the concentration of a sucrose solution affect the rate of Osmosis in Potato Cells?

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  • Essay length: 5574 words
  • Submitted: 17/11/2003
  • Marked by teacher: (?) Adam Roberts
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GCSE Life Processes & Cells

Teacher essay summary

5 star(s)

*****
Great attention to detail is shown in this write up together with the use of appropriate biological terminology throughout. A few small numerical errors.

Marked by teacher Adam Roberts 10/05/2013

The first 200 words of this essay...

Jennie Lace 10c

How does the concentration of a sucrose solution affect the

Rate of Osmosis in Potato Cells?

PLAN

I have chosen to investigate how the rate of osmosis taking place in potato cylinders varies when I change the concentration of the surrounding sucrose solution.

I will vary the concentration of sucrose in the solution, and carry out various measurements on the potato cylinders before and after the experiment, to see what affect changing the concentration has had.

I predict that with the lowest concentration of sucrose, the potato will increase in mass, because of water moving into the cells. The percentage increase will then get smaller each time I increase the concentration of sucrose in the solution. At some point, the mass of the potato will not increase, and will be the same as it was before (when there is no net flow of water particles in or out of the potato cells). After this, the mass of the potato will start to decrease as I keep on increasing the concentration of the sucrose solution. At some point the potato cylinders will lose all the water that they

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MbT essay summary

*****
Great attention to detail is shown in this write up together with the use of appropriate biological terminology throughout. A few small numerical errors.

Marked by teacher Adam Roberts 10/05/2013

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