Coursework on catalase

Coursework on catalase

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Home coursework on catalase

Investigating the Effect of Substrate Concentration on Catalase Reaction

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That is at the beginning of the reaction, the higher concentration of hydrogen peroxide, the more oxygen it evolves.

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After 20 seconds we were supposed to measure how much water and oxygen froth was produced oh the froth coursework on catalase already gone over the top of the ml measuring cylinder.

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Investigation of How the Concentration of Catalase Enzyme Affects the Rate of Reaction

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Note all the results in a table such as the one below. Disclaimer This is a real A-level school project and as such is intended for educational or research purposes only.

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To investigate the factors that affects the rate of fermentation of Glucose.

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Pour the hydrogen peroxide solution into the test tube containing the yeast and immediately put the coursework on catalase syringe bung on the end of the test tube, at the same time start the stopwatch. However, as the time goes on, the volume of oxygen catalawe released decreases.

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The rate of reaction can be calculated by this.

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This was achieved by recording the initial and final reading from the burette in every 20 seconds.

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Allosteric enzymes change shape between active and inactive stages, allosteric inhibitors induces the inactive form and allosteric activators induce the active form.

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Range of time between each reading The aim of the experiment is to compare the volume of oxygen within a same time, so catalawe was kept constant.

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This would slightly increase the concentration of hydrogen peroxide solution substrate concentration.

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Therefore, I have chosen second as the time limit. The best fit line was a straight line through the origin.

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All the active coursework on catalase are being used so any extra Hydrogen Peroxide molecules will have to wait until an active site becomes available. My pattern shows that as I have increased the Catalase the amount of froth has also been greater.

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We deliver papers of different types:

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Firstly, I used liver as the source of enzyme Liver:

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It is toxic and it is a strong oxidizing agent.

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This amount suited the experiment.

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Repeat all the tests coursework on catalase least three times so that an average can be obtained. They speed up the rate of a reaction however they do not affected themselves whilst doing this, which is why they are catalysts.

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The scale of the burette can show the measurement up to 0. A catalyst coursework on catalase a molecule which can speed up chemical reaction but remains unchanged at cqtalase end of the reaction.

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I assume all results are reliable.

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The curve of the graph of the reaction therefore flattens out at high substrate concentrations.

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The results I collected after my experiment were very accurate because it backed up my theory in my prediction and conclusion and the results were close in all three attempts with the increasing concentration resulting to a larger amount of froth. Catalase is extremely coursework on catalase acting because it has 4 active sites per molecule which is courseqork unusual.

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Repeat all the tests at least three times so that an average can be obtained. Catalase is an enzyme found in food such as potato and liver.

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To work out this experiment, I am going to use a formula of:

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Page 1 of 2. This gives the rate in cm3 of oxygen produced per second, this is because I am timing courseeork long it takes to produce 30cm3 of oxygen.

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The beakers were marked by a waterproof pen in order to identify the beakers containing different concentration of hydrogen peroxide. Put the bung closer to the conical flask so as to minimize the time needed to fit in the conical flask and coursework on catalase volume of oxygen leaks out.

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The aim of this experiment is to plan, carry out, analyse and evaluate an investigation into how increasing the concentration of an enzyme affects the rate of a reaction. This experiment could be improved in a number coursework on catalase ways.

It catalyzes the decomposition of hydrogen peroxide into water and oxygen: You have been warned.

From these results a graph can be plotted with concentration on the x-axis and time taken on the y-axis.

I expected this will give me a more reliable result. The curve of the graph of the reaction therefore flattens out at high substrate concentrations.

The theoretical maximum rate of reaction is when all the sites are being used but in reality this theoretical maximum coursework on catalase never reached due to the fact that not all the active sites are being used all the time.

From these results a graph can be plotted with concentration on the x-axis and time taken on the y-axis. H, yes you can use this title. The following are the results I obtained by carrying out the above experiment: The same apparatus used It was done in order to allow for consistency.

After my preliminary study and experiment, I chose the following apparatus: Temperature, yeast concentration, type of yeast, batch of yeast, volume of yeast, volume of hydrogen peroxide, air pressure and humidity.

They will affect the results and make the experiment unfair. Factors affecting the investigation: Let us turn your assignments into the highest grades! Diluting hydrogen peroxide solution When I was making the dilutions, some solution might leave inside the syringe. However when an enzyme reacts, it remains the same and can continue breaking down substrates, which is the reason why we do not have many

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