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What effects the reaction between a catalase and H O_?

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Introduction

What effects the reaction between a catalase and H O_. Introduction In this experiment, changing the surface area of potato to change the rate of reaction can be effected by the amount of H O present. Prediction I am going to test how the change in amount of enzyme effects the reaction. I think that as the surface area is increased the reaction and the amount of oxygen bubbles released will increase because the rate of an enzyme-controlled reaction is dependent on the number of successful collisions between molecules of enzymes and substrates. If more enzyme molecules are added, the more successful collisions will occur and the rate of reaction will increase. ...read more.

Middle

I am going to repeat each test three times, and then I will take the average for each set of results and plot them on the graph. For each test I will record how many bubbles of oxygen are released in two minutes. Below is a list of equipment I will need in order to do this experiment: Beaker Delivery tube Test tube Stop watch Cork borer Bench mat Scalpel Cutting tile Report I did not change what I did in my experiment from what I planned to do. In my experiment I first cut out a 4cm cylinder of potato using a cork borer then I cut it into the desired amount of pieces. ...read more.

Conclusion

My results do show that what I said in my prediction is correct. The greater the surface area the greater the reaction. Evaluation In order to improve on my experiment I could have used a wider range of pieces of potato, to see what happens when a far greater amount of potato pieces are used. I did not obtain any anomalous results, this is because as you increase the surface area you increase the rate of reaction causing the results to go up each time. You would not get results that went up then went down unless there was a problem with a vital piece of equipment, i.e. H O , the potato, or the means of measuring. Natalie Scaife Biology Coursework Miss Roberts ...read more.

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