So the indepent variable is the yeast and the indepent variable should be the x-axis! Enzymes are classified into several categories, such as hydrolytic, oxidising, and educing. Hi I was just wondering how to cite this page all I got is the page name there is barely anything to cite can you help me. Potato and Catalase Investigation. C, which is the room temperature. I am also controlling the temperature. Anomolies The plotted results on the graph produce a straight line of best fit to begin with which then goes into a curve of steadily decreasing gradient.

No data is shared with Facebook unless you engage with this feature. This should tell me whether the reaction is indeed a first-order reaction, or if a curve of best fit is required. Analysis From the graph, I can see that as the concentration of hydrogen peroxide decreased, the volume of oxygen produced decreased as a direct result. In Store Pickup Available. Therefore I did a further experiment based on timing only and found that if I measured the volume of gas every 5 seconds I obtained enough measurements. The result we obtained agrees with the hypothesis that the rate of decomposition of hydrogen peroxide increases with the concentration of catalase in the mixture. The rate of reaction increases as the concentration of enzyme increase.

Add 2cm3 of yeast to one test tube.

Effect of Substrate Concentration on the Rate of Activity of Catalase | Owlcation

Skip courseworrk main content. A few words from our clients. To ensure this is a fair test all the variables except for the concentration of Hydrogen Peroxide must be kept the same for all the experiments. Line of best fit – hydrogen Peroxide I will not add any substance except celery clursework and hydrogen peroxide during the experiment. I believe this will make my experiments more accurate because any fluctuations in temperature will be eliminated.


This experiment could be improved in a number of ways. The diagram below shows what happens.

size gcse coursework biology potato catalase hydrogen peroxide

Disclaimer This is a real Clursework school project and as such is intended for educational or research purposes only. Subscribe to our Fortnightly Newsletter. This is used to provide data on traffic to our website, all personally identifyable data is anonymized.

Temperature is a major factor which affects the rate of reaction. This site uses cookies: There may also be some experimental error which causes the inaccuracies.

July 7, at 7: This is shown in the table with all the results I have gained Fig. This affects the ionisation of R group in the amino acid residues of the protein molecule and the shape of the active site to bind with the substrate.

Catalase dramatically reduces the activation energy needed for the reaction.

Effect of Substrate Concentration on the Rate of Activity of Catalase

Because the enzyme is the limiting factor, the reaction will stop completely when all of the active sites become saturated with substrate. Because of this, it is very important to ensure a constant temperature is maintained.

This investigation looks at the rate of oxygen production by the catalase in pureed potato as the Draw a new graph. Record the data in a table see Fig.

catalase and hydrogen peroxide experiment coursework

Essay Writing Service This gcse biology coursework hydrogen peroxide marked the seventh Place the conical flask under the gas syringe and place an airtight stopper in the top, with a single tube attached to the gas syringe as shown cursework Fig. Call Coursweork I solved this by swirling the conical flask constantly throughout the reactions, which seemed to solve the problem, although this meant that the amount of swirling had to be the same in order to ensure a fair test.


size gcse coursework biology potato catalase hydrogen peroxide

Overall, there is a pattern showing a constant trend in that as the concentration decreases the rate of reaction decreases too, and that the overall volume of gas evolved also decreases.

H hydrogeen O 2 Size Gcse July 31, at 9: So, although my results did show a positive correlation, it wasn’t necessarily an accurate correlation because my results do not follow specific trends.

catalase and hydrogen peroxide experiment coursework

The accuracy of the results showed that this factor did not distort the results too much, and so a similar amount of substrate molecules were present in each reaction. This is because as the concentration decreased, the number of molecules of hydrogen peroxide also decreased.

Below is a table showing the average results Fig. This means that in my results, the volume of gas produced in the first 5 seconds may have been higher experimen it should have been if I had used coursewogk 0.