Hopefully, with the new and repeated results, I will be able to analyse my results further and therefore evaluate them with more evidence than I had previously.
Collating and comparing class results allows students to look for anomalous and inconsistent data. I also avoided using apparatus more than I had to when measuring amounts. So if the apparatus is free of leaks, 22 cm3 of water should be displaced in the measuring cylinder with 10 vol hydrogen peroxide.
This would have affected the number of molecules of hydrogen peroxide present, which in turn would have affected the number of collisions between enzyme and substrate molecules. However, this is only true up to around 40oC. Liver also contains catalase, but handling offal is more controversial with students and introduces a greater hygiene risk.
Cells make the enzyme catalase to remove hydrogen peroxide. To find the effect of temperature on enzymes, using a potato as a catalyst. Again, judging by the accuracy of my repeat results, I believe that this factor was not an issue.
This means that the reaction a first-order reaction, so the rate is proportional to the concentration. Discs of potato react too slowly. Another factor which was hard to measure was the volume of gas produced, because some of the higher concentration reactions were very fast, so it was hard to read the correct values every time.
Below is a summary of all the percentage errors. As result of greater kinetic energy, the particles move faster and faster moving particles collide more frequently, resulting in greater product, water and oxygen in this case being produced in a given time.
The food science online MS program offers one to three courses each semester, including summer semester. The enzyme itself is unaffected by the reaction. If collecting the gas over water is complicated, and you have access to a cm3 gas syringe, you could collect the gas in that instead.
I did this by only using pipettes, which have a very small apparatus error when compared to beakers. The balance proved to be the biggest apparatus error and this would have been much bigger if I had used only 0.
Wear eye protection and protect clothing from hydrogen peroxide. Minute quantities of an enzyme can accomplish at low temperatures what would require violent reagents and high temperatures by ordinary chemical means. If the line of best fit is correct, it would make this value an anomaly, which clearly it is not since it is the most accurate value on the graph.
This would result in a greater probability of successful collisions, and therefore more enzyme-substrate complexes being produced. They are nbsp; Investigating an enzyme-controlled reaction:. Factors affecting enzyme activity. Enzymes are sophisticated catalysts for biological processes.
These practicals (and the practicals at intermediate level) give you opportunities to explore how enzyme activity changes in different conditions.
Enzymes Coursework. ENZYME INVESTIGATION Planning Introduction: An Enzyme is any one of many specialised organic substances, composed of polymers of amino acids, that act as catalysts to regulate the speed of the many chemical reactions involved in the metabolism of living organisms/5(1).
Biology Coursework Enzymes. Extracts from this document Introduction. The enzyme amylase that I will be using throughout my investigation to find out how starch concentration affects an enzyme controlled reaction is found in saliva in the mouth and also in the small intestine.
Inside the body the enzyme amylase is used to break down 4/5. Ccea as Biology Coursework: an Investigation to Measure the Percentage Light Transmission Through a Solution in Which Jelly Cubes Were Immersed over a 24 Hour Period. Topics: Enzyme, Most enzymes are globular proteins and contain active sites.
The active site is the part of the enzyme which combines with the substrate. ENZYME. INVESTIGATION. AQA Biology Dual Award. Skills Tested: Observation /8. Analysis /8. Evaluation /6.
The Skinners’ School. 1. Introduction.
Enzymes were discovered by a German chemist called Eduard Buchner near the end of. Read Enzymes Coursework free essay and over 88, other research documents. Enzymes Coursework. ENZYME INVESTIGATION Planning Introduction: An Enzyme is any one of many specialised organic substances, composed of polymers of amino acids, /5(1).Enzymes investigation coursework