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... Firstly I used the cork borer to get the beetroot cylinders to the same diameter. ... I washed each beetroot gently to rinse of excess colour and then dried them on a paper towel to bring them all to the same stage. ... Next I filled the test tubes with 10 cm3 of distilled water, before I placed each beetroot cylinder into the water bath I measured its temperature. Simultaneously I put a beetroot in a test tube then into a water bath whilst switching on the stopwatch. ... I used the same cork borer throughout both trials; this is so the diameter of the beetroot was the same. I also cut the beetroot to the same length so that they would all be of the same size and area to make the test fair. ... This is that as we increased the temperature of the water in which the beetroot was in the absorbent reading increased. ... Diffusion is the movement of substances across a cell membrane and in this case facilitated diffusion is occurring across the membrane because no energy is required.
There is an enormous jump from the second to the third segment (just passed 50ºC) on the second line graph and this is due to factors such as the collision theory and also because the inner and outer selectively permeable membrane proteins are being denatured so the membrane becomes more porous causing much more purple pigments to be released.
Finally as we can see that above 50ºC there is a huge jump in the colorimeter readings, this could be due to the fact that the membrane proteins are being denatured at this temperature so much more leakage of anthocynin occurs.
Approximate Word count = 1383
Approximate Pages = 5.5
(250 words per page double spaced)
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