• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

An Experiment To Determine The Water Potential Of Sweet Potato & Baking Potato

Extracts from this document...

Introduction

An Experiment To Determine The Water Potential Of Sweet Potato & Baking Potato Introduction This experiment was performed to establish the water potential of different types of potato in various concentrations of sugar solution. The sweet potato has been chosen because it has a higher sugar content than baking potato, which should affect the water potential. Apparatus & Materials 1 Cork borer 11 boiling tubes 1 Beaker 1 baking potato Test tube rack 1 sweet potato Measuring cylinder Scalpel Cutting Tile Scales Ruler Method 1. Use the cork borer to cut out 11 cylinders of sweet potato. 2. Cut each cylinder to 5cm lengths. ...read more.

Middle

0.74 0.1 4.52 5.02 0.5 0.2 5.07 5.57 0.5 0.4 4.62 4.99 0.37 0.6 4.28 4.32 0.04 0.8 4.36 4.24 -0.12 1 5.06 4.58 -0.48 1.2 4.89 4.43 -0.46 1.4 4.93 4.31 -0.62 1.6 4.97 4.1 -0.87 1.8 4.72 3.84 -0.88 Conclusion This experiment shows the sweet potato absorbs water at from a solution with a higher concentration of sugar present as oppose to the baking potato which stops absorbing water when the solution became 0.2 molar. This shows there is a higher concentration of sugar in sweet potato than in baking potatoes because the only moves along a gradient where one concentration is higher on one side. ...read more.

Conclusion

The only things which may have affected the results were the varied weights of the cylinders of potato if they were all weighed out to the same weight they would all have the same surface area so there would be the same area for the water to diffuse across. The temperature should have also been recorded and kept constant throughout the experiment because if the temperature increases the water will diffuse faster at higher temperatures. In the last result for the baked potato where the weight went up again was because the cylinder was not dried properly and the solution when at that concentration was very viscous so it stuck to the outer layer of the cylinder thus increasing the weight. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Life Processes & Cells section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Life Processes & Cells essays

  1. Marked by a teacher

    An Experiment to determine Water Potential in Potato Tissue.

    4 star(s)

    The rate was quite steady from 0.0 moldm-3 until concentration was 0.6 moldm-3. From 0.4 moldm-3 of concentration to 1.0 moldm-3, the rate was slowed down. The gradient of the first half of the graph was steeper than the second half.

  2. Aim To determine the water potential of a potato tuber cell

    I had predicted that as the sucrose concentration increases, the mass of the potato would decrease. This was shown to be correct in my results. In this investigation in which I obtained these results, had several limitations. The most significant limitation is the fact that the potato was squeezed during cutting, causing water to be lost.

  1. An Investigation to determine the Water potential of Potato cells.

    Anybody found doing so will be permanently banned. 3.71cofg fgr sefgfgw orfg fgk infg fofg fg. 3.67codg dgr sedgdgw ordg dgk indg fodg dg. 3.58 3zFdCtA from 3zFdCtA coursewrok 3zFdCtA work 3zFdCtA info 3zFdCtA 3.57codb dbr sedbdbw ordb dbk indb fodb db; 3.40 Austen oppressed shayon's rationalisation theory.

  2. To determine the water potential of potato tuber tissue

    can read and I need my results to this accuracy, as my results tend to be changes of under 0.1g. I realised that I would needed to go to lower values of solute potential for the external solution if I was to get a proper result for the water potential of the potato tuber tissue.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work