RP-Effect of diff concentrations-sugar solution-plant cells

• Sample Methods:

  Potatoes can be used!

  • Cut some cylinders of potato tissue and measure their mass
  • Place the cylinders in different concentrations of sugar solution
  • After about 30 minutes remove the cylinders and measure the mass again
  • If the cylinders have a change in mass they have gained or lost water by osmosis
• Considerations, Mistakes and Errors

  -The cylinders need to be left in solution long enough for a significant change in mass to occur

  -Before the mass of the cylinders is measured again, they should be rolled on tissue paper to get rid of any excess solution
• Variables:

  Independent: The concentration of sugar solution

  Dependent: The change of mass in the potato

  Control: Temperature, Time cylinders left in solution, volume of solution
• Hazards and Risk:

  -Cutting potato