Investigating the water potential of potato cells.

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Raj Brahmbhatt          a/s  level coursework    biology

Investigating the water potential of potato cells

Introduction

  I am going to be doing an experiment to try and measure the water potential of potato cells. The net direction of water movement in a cell depends on whether the water potential of the cell solution is more negative or less negative than the water potential of the external solution.

Aim

   To measure the water potential of potato cells in different concentrations of sucrose solution.

Equipment

Reasons for choosing equipment

  1. 18 test tubes are used to place in the different concentrations of solution with the potato

  1. Pipette is used to measure out solutions
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  1. Potato is used for finding out the potential in its cells

  1. Cork borer is used to cut up the potato

  1. 1m sucrose solution is used to make up the rest of the solutions

  1. Pipette filler is used to fill up the pipette safely

  1. Test tube rack is used to hold up the test tubes

  1. Ruler is used to measure the lengths of the potato pieces

  1. Weighing scales to measure the weight of the potato pieces

  1. Beakers to hold measured solutions

  1. Forceps to ...

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