THE EFFECT OF TEMPERATURE ON THE MOVEMENT OF PIGMENT THROUGH THE CELL MEMBRANES

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THE EFFECT OF TEMPERATURE ON THE MOVEMENT OF PIGMENT THROUGH THE CELL MEMBRANES

Table showing the effect of different temperature levels in degrees Celsius on the movement of the red anthocyanin pigment from the beetroot cell to distilled water after 30 minutes, using a colorimeter to measure solute concentration as determined by % transmission

Trial 1 was conducted by me.

 Mean= sum of all data values/the number of data values.

 this is the formula of standard deviation. It measures the

                                                              Spread of the data values from the mean.


CONCLUSION

Figure 1 showing cell  membrane structure

From the graph it is evident that as the temperature increases, the % transmission of light through the solution(distilled water and anthocyanin) decreases.Therefore it can be deducted that temperature is one of the factors that affect the diffusion of anthocyanin because the amount of anthocyanin diffused in the distilled water was dependent on the temperature level the sample was in, for example at 45°c,the % light transmission was 99.4%(0.6% absorption) on average whilst at 85°c the %light transmission was 54.4%(46.6% absorption) on average, this shows that the distilled water became more concentrated for samples that were on higher temperatures than the ones at lower temperatures.

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According to theory, the higher the temperature, the faster the diffusion, so the high temperature caused the molecules of the anthocyanin to move faster from a region of high concentration(beetroot cell vacuole) to a region of low concentration(distilled water) until equilibrium is reached. As shown in Fig1, the plasma membrane is made of a phospholipid bilayer which consists of hydrophilic phosphate heads and hydrophobic fatty acid tails. So the phosphate heads form the two outer parts of the plasma membrane as they are attracted to water whilst the fatty acid tails form bonds with each other in the inner part ...

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