The line of best fit also suggests values of concentrations which I have not investigated. 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. Because salt concentration denatures the enzyme we did an experiment to see how the salt concentration would consequence the reaction.
For a given [E]0 and high values of [S]0, the rate of product formation becomes independent of [S]0, reaching a maximum value known as the maximum velocity, V max. When a small quantity of hydrogen peroxide is added to it, the enzyme Catalase present in the soaked pea seeds breaks down them into water and oxygen, producing froth due to the release of oxygen gas.
We will conclude the experiment by establishing the enzymes optimum temperature the temperature at which it works best at. Dilute immediately before use and put in a clean brown bottle, because dilution also dilutes the decomposition inhibitor.
The enzyme fundamentally jerks on substrate and interrupt it down. Wash splashes of pureed potato or peroxide off the skin immediately. Consistent Temperature Temperature is a major factor which affects the rate of reaction. Put the syringe in place in the bung of the flask, but do not push the plunger straight away.
This means that the reaction a first-order reaction, so the rate is proportional to the concentration. The reaction is exothermic, meaning heat is produced in the reaction.
For example, if there were more molecules of yeast, the rate of reaction would increase because there would be more collisions between enzyme and substrate molecules. Another problem was the temperature of the room. Method of changing the independent variable 1.
Collating and comparing class results allows students to look for anomalous and inconsistent data. If my replicates had not been so close I would have had to change the tube.
This means that in my results, the volume of gas produced in the first 5 seconds may have been higher than it should have been if I had used exactly 0. First of all, there was an error caused by the measuring cylinder which I used to collect the volume of oxygen. Preparation a Make just enough diluted hydrogen peroxide just before the lesson.
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. Use this information as a check on the practical set-up. Conclusion Activity A: Hypothesis: If hydrogen peroxide is introduced to catalase, then the rate at which the decomposition of by catalase will increase because enzymes are proteins that catalyze chemical reactions.
Decomposition of hydrogen peroxide is a chemical reaction, therefore, its rate will increase because, after all, catalase is an enzyme. GCSE Biology Coursework The Reaction; • • • • Hydrogen peroxide (H2O2) is formed in body cells constantly.
It is broken down to water and oxygen. This reaction is catalysed by the enzyme catalase. Documents Similar To GCSE Biology Course Work (1) Solution Properties. Uploaded by. dhavalesh. sedev Uploaded by. Cong Van. Therefore I predict that by heating the Hydrogen Peroxide, when it reacts with the enzyme the shape of the enzyme will be ruined due to the high temperature.
So the higher the temperature of the Hydrogen Peroxide and Catalase solution, the less effective the reaction will be. Apr 30, · This is because as there are progressively fewer molecules of hydrogen peroxide there will be fewer collisions between the substrate and enzyme molecules (catalase in yeast), leading to a decrease in enzyme-substrate complexes stylehairmakeupms.coms: 5.
Hydrogen peroxide (H 2 O 2) is a by-product of respiration and is made in all living cells. Hydrogen peroxide is harmful and must be removed as soon as it is produced in the cell. Cells make the enzyme catalase to remove hydrogen peroxide. Catalase breaks down the hydrogen peroxide into water and oxygen before it damages the cell (Frederick, ).
The purpose of our lab is to prove  how catalase speeds up the break down of hydrogen peroxide and determine the reaction rate at which it does .Biology coursework enzymes hydrogen peroxide