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osmosis I have chosen to test what effect the concentration of sucrose solution has on the chips.

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  • Essay length: 951 words
  • Submitted: 05/10/2005
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AS and A Level Exchange, Transport & Reproduction

The first 200 words of this essay...

Biology Coursework - Osmosis

Introduction

For my Biology coursework I am investigating osmosis. I am doing a practical to find out how osmosis affects one of the variables listed below.

Variables

* Temperature

* Concentration of sucrose solution

* Time in solution

* Beginning mass of chip

* Amount of distilled water with the sucrose solution

* Beginning surface area of chip

Idea

I have chosen to test what effect the concentration of sucrose solution has on the chips.

Prediction

* I think that the chips in the test tubes containing more sucrose solution than distilled water will increase in temperature.

* I think that the chips in the test tubes containing less sucrose solution than distilled water will decrease in mass.

* I think that the chips in the test tubes containing equal amount of sucrose solution and distilled water will stay roughly the same mass.

I think the graph of the results will turn out like the sketch I have drawn below.

Page 1

Reason

Osmosis is the passage of water molecules from a region of high water

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