Catalase And Hydrogen Peroxide Lab Report

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Introduction The mixture of liver and its enzyme catalase and hydrogen peroxide is the basis of this experiment. This experiment was conducted to observe the enzyme catalase and how it reacts with hydrogen peroxide. The liver was chosen as the catalyst in the experiment because that is where catalases are predominantly found in mammals. This is a practical experiment because it teaches one how catalases react with other substances and observing how they destroy harmful substances in the living things. It also shows how enzymes speed up experiments. Enzymes are proteins that act as catalysts within living cells. They are composed of long chains of amino acids. There is a point on an enzyme called an active site where another part…show more content…
Procedure Using the 6 test tubes in the list of materials, label each with the following labels: cold, room, hot, warm, and potato. Leave one blank. With the test tube labeled “room”, using the forceps to pick it up, place a small piece of liver in the test tube. Submerge the liver in 5 mL of hydrogen peroxide. Observe and note any reactions. Rate the reaction using a (0-5) scale. 0= no reaction, 1=slow reaction, 5= very fast reaction. Then, feel the bottom of the test tube and describe what you find in terms of either endothermic or exothermic. Now, pour out the liquid contents of this test tube. Make a prediction on what might happen if you add 5 mL of peroxide to the same liver. After that, pour the peroxide back in. Note your observations as done previously. For the second part of this lab, we used the forceps to place a small piece of liver into the test tube labeled “hot”. We then submerged the liver in 5 mL of water. Using the test tube clamps, we placed this test tube in the boiling water bath. We then left it in the bath for 5 minutes. Once the time was up, we took the test tube out of the bath and poured out the water. Then, we placed 5 mL of hydrogen peroxide over the boiled liver. Then, we placed 5 mL of hydrogen peroxide in the test tube labeled “cold”. Using the forceps, we
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