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Investigate the Effect of Temperature Change on the Permeability of Beetroot Cell Membrane.

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  • Essay length: 1236 words
  • Submitted: 19/02/2004
  • Marked by teacher: (?) Sam Morran
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AS and A Level Molecules & Cells

Teacher essay summary

3 star(s)

This is a fairly average essay that discusses the results of a practical looking at leakage of colour from a beetroot.

It does not explain the practical at all only looks at the results. It would be helpful to have had further details of how results were collected as it leads to a little confusion.

There are areas where the biology is a little inaccurate but only in minor parts. The statistical calculations are, however, a good example.

***

Marked by teacher Sam Morran 08/01/2013

The first 200 words of this essay...

Investigate the Effect of Temperature Change on the Permeability of Beetroot Cell Membrane.

Aim

In this investigation I will examine whether there is a relationship between the amounts of leakage of beetroot pigment into water under various range of temperatures. Furthermore, I will also investigate if there is a correlation between absorbency and temperature.

Hypothesis

With high temperatures it is likely that the phospholipids in a Beetroot Cell Membrane will move faster. This will inevitably result in the membrane becoming for permeable. Therefore, I predict that, there will be a positive relationship between permeability and temperature. I also predict that there will be a positive correlation between the two variables, which means as the temperature increases the absorbency will inevitably increase.

Null Hypothesis

There will be no relationship between the rise in temperature and the amount of beetroot pigment leaking into the water.

Results

Temperature (ºC)

Absorbance 1

(arbitrary units)

Absorbance 2

(arbitrary units)

Absorbance 3

(Arbitrary units)

Average

(arbitrary units)

20

0.12

0.08

0.06

0.09

30

0.01

0.03

0.12

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MbT essay summary

This is a fairly average essay that discusses the results of a practical looking at leakage of colour from a beetroot.

It does not explain the practical at all only looks at the results. It would be helpful to have had further details of how results were collected as it leads to a little confusion.

There are areas where the biology is a little inaccurate but only in minor parts. The statistical calculations are, however, a good example.

***

Marked by teacher Sam Morran 08/01/2013

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