decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in reproductive reactions. Likewise‚ catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of molecules of hydrogen peroxide to water and oxygen each second. Catalase is a tetramer of four polypeptide chains‚ each over 500 amino acids long. It contains four porphyrin heme (iron) groups that allow the enzyme to react with the hydrogen peroxide. The optimum pH for
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used is different concentrations of potato and the reactant used will be Hydrogen Peroxide. Hydrogen Peroxide which will be the buffer solution is a PH of 7.2. My hypothesis for the experiment is that as the concentration of the enzyme is increased the rate of reaction will be increased‚ producing oxygen at a faster rate. The results in my opinion will show positive correlation. The amount of buffer solution (hydrogen peroxide) will be kept the same throughout the experiment in the interest of reliability
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Enzyme Catalysis Abstract: Catalysis is an enzyme that decomposes hydrogen peroxide into oxygen and water. In this lab we will conduct a series of experiments to determine the affects of; pH‚ temperature‚ and concentration change on such catalysis. After completing the experiments we determined that catalase works most efficiently when in a 27°c‚ 50% (5 ml of catalase – 5ml of water)‚ and a normal body pH of 7°. By: Patrick Jawien Course Code: SBI 4U Performance Date: 25 September 2012
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factors help enzymes break down the poisonous chemicals into harmless substance. When we tested the liver with 2ml of hydrogen peroxide for a normal reaction it showed that it was exothermic. We added more hydrogen peroxide and the reaction rate of the liver was 3. We learned that the catalase is reusable because the liver reacted both times when we put in the hydrogen peroxide. We also tested another enzyme reaction for pH. In this test we learned that high pH equal high reaction rate. The 4 items
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things) its specific use is to speed up the decomposition of Hydrogen peroxide (H2O2) within cells. Hydrogen peroxide is a bi-product of chemical processes such as respiration and is harmful if not removed or broken down into less harmful molecules. The enzyme (Catalase) acts as a catalyst‚ vastly accelerating this chemical reaction and allowing cells to function at a level where they can support life. Catalase Hydrogen-peroxide Water + Oxygen 2H2O2 2H2O + O2 Enzymes
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without having to change its own shape‚ which makes enzymes different from other proteins. A common enzyme that we have is catalase‚ which breaks down hydrogen peroxide into the products water and oxygen. To observe this catalase activity I used small amounts of liver samples slightly smaller than the size of a pea to see the reaction when hydrogen peroxide is added to it. In this experiment I exposed the liver samples in three different temperature environments: 3°c‚ 22°c‚ and 75°c. I wanted to measure
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Prepared by Anel Behric For professor Goodrow General Biology Lab Mohawk Valley Community College 10/14/2014 6:00 PM Introduction: This experiment was conducted to examine the breakdown of substrate hydrogen peroxide (H2O2) by catalase‚ which is a specific enzyme that breaks down substrates of (H2O2). Molecules are in our bodies and nature. They move around constantly which causes them to be part of random collisions‚ which produce chemical reactions. This
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A Team Project Entitled: Feasibility of Mustard (Brassica Integrifolia) Root Extract for Water Phenol Decontamination ANNA KRIZA D. LACHICA MA. ANGELICA V. RAMOS RESEARCHERS MS. CRISTINE SEALZA SAÑADA RESEARCH TEACHER February 7‚ 2011 Table of Contents Acknowledgement.....................................................................................................3 Abstract ...............................................................................................
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an enzyme to the point where is no longer serves its vital function. Three factors are temperature‚ pH and substrate concentration. Catalase is an enzyme that is found in most living cells in the blood that catalyses the decomposition of hydrogen peroxide into water and oxygen. Aim: to test the effect of temperature increase‚ change in pH and change in substrate concentrations on the enzyme; catalase‚ in the form of potato Hypothesis: the optimum temperature for catalase is room temperature
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temperature range and limited sample size at each group. The experiment also existed two other uncontrolled variables which are the size of liver and the amount of Hydrogen Peroxide‚ hence altering the authenticity of the practical result. At each of the five experimental group‚ there were variations amongst the amount of Hydrogen Peroxide and the size of beef liver‚ which can be a problem because in a well controlled and designed experiment‚ there is only one independent variable. These uncontrolled
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