effects of concentrations of sugar solutions on potato chip cells

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Page  of                  Lizzie Wright                

Biology Coursework

       My task is to investigate the effects of concentrations of sugar solutions on potato chip cells.

Planning 

 

    My controlled variables are to be the temperature the experiment is performed at, the starting length of the potato chips, the total quantity of solution to be used and the amount of stirring for each test.

The effects of these variables if uncontrolled are listed in the table below.

      Osmosis is a special case of diffusion. It is the process in which water molecules diffuse from a higher water concentration to a lower water concentration through a partially permeable membrane. The larger the surface area, the more osmosis can take place.

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    My independent variable I will be changing is the concentration of the sucrose solution; while my measurable variable will be the length and mass of the chips.

   

    I predict that as the sucrose concentration increases the size of the chips will decrease and become flaccid, and as the sucrose concentration decreases the size of the chips will increase and become turgid. This is again due to osmosis.

  The osmosis theory states that when a plant cell is placed in a high water concentration, the water passes through the cell wall ...

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