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

Can Different Temperatures Affect the Cell Membrane of a Beetroot?

Extracts from this document...

Introduction

Can Different Temperature Effect the Cell Membrane of a Beetroot By Christopher Black & Lachlan Brown Table of Contents Abstract Introduction Aim Hypothesis Material Method Results Discussion Conclusion ________________ Abstract The aim of this experiment was to see whether different temperatures will affect the cell membrane, thus would then releases the purple pigments out of the vacuole which causes the leakage of the purplish liquid. ________________ Background Information The outermost layer is the cell wall, which is present only in plant cells and is made up of a carbohydrate called cellulose and also has other protein substances embedded within it. The cell wall is a rigid layer and gives structural stability to the cell and also limits the permeability of large substances into and out of the cell. Within the cell wall, surrounding the cytoplasm is the cell membrane which is a semi-permeable membrane consisting of a phospholipid bilayer. The bilayer consists of phospholipids which arrange themselves so that the hydrophobic (?water hating?) ...read more.

Middle

These are formed because the phospholipids that make it up have a hydrophilic (?water loving?) head and a hydrophobic (?water hating?) tail. The tails pack together, exposing only the heads to the water. This is the phospholipid bilayer. The beetroot pigment is used commercially as food dye. It changes colour when heated so can only be used in ice-cream, sweets and other confectionary, but it is both cheap and has no known allergic side-effects. Aim To investigate whether different temperatures can damage and denature the plasma cell surface membrane of beetroot cells. This would then release the beetroot pigments out of the vacuole which causes the leakage of the purplish liquid. Hypothesis Beetroot in hotter water will release its pigments more than beetroot in cooler water. The hotter water should break more vacuoles containing the pigments which will make the water appear to be more purple. Meanwhile the colder water will still have pigments throughout the water, and therefore will be scarcer. ...read more.

Conclusion

Even though cutting them side by side of each other did make them look similar, the sizes were off still. The experiment as brought sight to what can happen when a fruit or vegetable or flower is heated in water will do. The water colouring process will accelerate more than twice as fast and that could provide big opportunities in some companies. A flaw in the experimental design was that attention wasn?t given to the material of test tubes that were used. A glass test tube was used for the beetroot that was frozen in the freezer; while in fact a plastic test tube should have been used because the glass test tube could not flex to the expansion of the water in the test tube and so resulting it to crack. Conclusion In conclusion, the hypothesis was supported as the beetroot?s pigments were release more in the hot water more than the cold water did. The hotter water made the beetroot cell vacuoles to burst, releasing the pigments, thus colouring the water. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Molecules & 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 AS and A Level Molecules & Cells essays

  1. Marked by a teacher

    Beetroot contains red pigments called betalains, located within the cell vacuole. Normally the pigments ...

    4 star(s)

    Hypothesis - * When temperature is cold little pigment would be given out * As the temperature increases the more red pigment is going to be given out. * At 40 degrees Celsius- 45 degrees Celsius the membrane gets denatured and thus more pigment would be released.

  2. Marked by a teacher

    Investigating the effect of temperature on the movement of pigment through beetroot cell membranes.

    4 star(s)

    temperatures denaturing cholesterol in Essential Cell Biology, I think that this high temperature around 70?C will lead to the full disassociation of the membrane causing the sudden rise in betalain pigment outside of the cell. By analysing my preliminary experiment and looking through the Essential Cell Biology Textbook I gained

  1. Marked by a teacher

    The Effect of Ethanol Concentration on the Permeability of Beetroot Cell Membranes to Betalain

    3 star(s)

    Keep it away from bromine, mercury and silver nitrates, platinum and potassium as it reacts with all of these. Keep out of eyes by wearing goggles. Keep off of clothing by wearing a lab coat. Keep water close by in case it is spilt or affects a person.

  2. Marked by a teacher

    Effect of different temperatures on the permeability of beetroot cell membrane.

    3 star(s)

    therefore there is a positive significant correlation between the two values. Average absorbance In the average absorbance each absorbance was increased when the temperature was increased so the rank was not changed therefore the rs was 1. This means it is over the critical value (0.79)

  1. Marked by a teacher

    effect of temperature on beetroot pigment through membrane

    3 star(s)

    - Constantly monitor the temperature, maintaining it at the desired temperature by adding ice cubes or heat using a Bunsen burner. 6. After 3 minutes remove all boiling tubes from the beaker using a pair of tongs (as the boiling tubes might be hot and will burn your hand at certain temperatures)

  2. Permeability of Cell Membrane in Beetroot Cells

    When cutting the beetroot into pieces of desired length, caution should be taken when using the scalpel, as it is a lot sharper and more precise then using a knife and could cause severe cuts, also, fingers should not be too close to where you are cutting.

  1. TEMPERATURE ON BEETROOT PERMEABILITY

    Another anomalous result is for 54�C, and it's for 8% light transmission. This is slightly higher than others in the same group. This may have occurred because it's hard to get an accurate cutting of 2.5cm for the beetroots. The inaccuracies of the cuttings may have resulted in this error.

  2. An experiment to test the effect of different temperatures on the permeability of cell ...

    Exocytosis is possible through the cell membrane, but it is a process involving bulk transport, and this is not likely to take place through the tonoplast. After looking at all the possible ways in which the dye could leak out of the cell, it can be certain that the dye

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