Practical: The Effect of the Enzyme Catalase from Chicken Livers on Hydrogen Peroxide [pic] Strand1: SA1‚ SA2‚ SA3 Date: Group Members: Marks: /12 (Part A) + /18 (Part B) = /30 INTRODUCTION: |There are many different reactions that are happening in our bodies all the time. There are reactions that build up molecules‚ | |synthesis/anabolic reactions‚ as well as reactions that break down molecules‚ catabolic reactions. Together
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Chemiluminescence of Luminol Introduction In this experiment‚ luminol was mixed with hydrogen peroxide (an oxidising agent) resulting in chemiluminescence. The experimentis designed to see how the duration of luminescence is affected by varying temperatures. It has been made to be deliberately inaccurate‚ so another objective would be to see whether subjective observations can be improved by repetition and averaging. Chemiluminescence is the production of light from a release of energy in
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Vaishnavi Kothapalli Mrs. Manning Honors Biology 30 November 2012 TITLE: The Reaction Rate of Catalase in Various Concentrations of Hydrogen Peroxide QUESTION: How long does the catalase take to float to the top of a cup filled with different amounts of hydrogen peroxide concentration? PREDICTION: A prediction that can be made for this experiment is that the higher the concentration‚ the faster time it takes the catalase to react with the solution. As the concentration increases from
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Investigating the Effect of Concentration on the Rate of Enzyme Catalysed Reaction To investigate the effect of concentration on the rate of enzyme catalysed reaction I must know all the factors that affect it in order to investigate in this. Here are all the factors: Temperature- Enzyme like it warm but not too hot. Enzymes are biological catalysts‚ which speed up chemical reactions. They work most efficiently at the optimum point (37°C). If they are below 37°C they will work
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shape of the enzyme‚ not allowing it to do its function. Testing on peroxidase- an enzyme- will be done on an animal enzyme (chicken liver) and a plant enzyme (potato). For testing Hydrogen Peroxide (H2O2) will be poured over the enzymes. When the enzymes in the potato or liver combine with the substrate Hydrogen Peroxide the enzymes break and form a chemical reaction 2H2O2 à 2H2O + O2. The more bubbling occurring‚ the more of a reaction there is. Hypothesis- 1. The rate of reaction in the potato
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error. Introduction Enzymatic activity can be manipulated by changes in physical properties. Changes in heat‚ pH‚ and salt concentration can all have effects on the rate of enzyme activity (Farzin‚ 2012). Enzymes “catalyse the dismutation of hydrogen peroxide to oxygen and water (2H2O2 → 2H2O + O2)” which is the cause of the bubbles that can be observed and measured (Obinger‚ 2012). The output of oxygen occurs very rapidly when the reaction begins and bubbles appear quickly and clearly which serve
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vinegar‚ hydrogen peroxide‚ and oil. By using our knowledge about the four liquids we needed to identify the components of an unknown mixture. Theoretical Background The liquids commonly found around the house such as acetone‚ vinegar‚ hydrogen peroxide‚ and oil was tested to identify the physical and chemical properties of these liquids. Acetone usually used as nail polish remover dissolves plastic. Vinegar used in cooking and as a condiment begins to fizz when mixed with baking soda. Hydrogen peroxide
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So essentially‚ the higher the concentration of hydrogen peroxide‚ the faster the reaction will take place. Furthermore‚ the foam (water and oxygen produced by the potatoes catalase reacting with hydrogen peroxide) was a kind of indicator of how the reaction was going. It almost indirectly related to the temperature increase‚ because every time the temperature was rising there also seemed to be foam also rising at the top of the hydrogen peroxide. As you can compare when the temperature started
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(pg. 345 Figure 12-15) Question #7 from D2L: What are peroxisomes? Where do you find them? What role do they play in cellular metabolism? Explain their role in hydrogen peroxide metabolism. Peroxisomes are single membraned organelles that contain the enzyme catalase‚ which is responsible for the breakdown of hydrogen peroxide. Eukaryotic cells typically have peroxisomes present in the cell‚ however they are most commonly found in the “kidney and liver
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used to remove hydrogen peroxide from clothing in the textile industry. This would make sense because when an enzyme encounters a substrate molecule‚ the interaction between the enzyme and the substrate is weak when broken apart‚ resulting in a different shape to strengthen the binding. An example of this complex is shown below: The Catalase enzyme is also used for commercial use‚ not only playing the role of life in a living organism. The enzyme is used to remove hydrogen peroxide from milk in order
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