Bio Lab
...the drops of stock enzyme solution were added to the peroxide the test tube became warm. The source of this change was the result of an exothermic chemical reaction. 3) What are some possible explanations for the bubbles? When the stock enzyme solution is added to hydro peroxide bubbles began to form. Some possible explanations for these bubbles are that when the two substances come in contact with one an other, a reaction occurs and oxygen is released. 4) Using your knowledge of chemical reactions and enzymes, choose one of the three hypotheses. Hypothesis B states, “the hydrogen peroxide is changed in the presence of the enzyme, but the enzyme does not change.” With my knowledge of enzymes, I know that after an enzyme is used it is recycled, or used again. 6) Does hydrogen peroxide, the enzyme, or both change after the reaction? Explain the reason for your answer. Hydrogen peroxide changes after the reaction because when a reaction occurs, the enzyme is used only to accelerate the speed of the reaction, it does not change. The enzyme is recycled but the hydrogen peroxide has a different substance, known as the product of the reaction. 7) What does this tell you about what an enzymes does in a chemical ? This explains that an enzyme is only used to speed up the reaction and will not change at any time. 8) Which of the three hypotheses is supported by these results? Hypothesis B is supported by these lab results. 9) What role does catalase play in the cell? The enzyme, catalase, is found in most cells and catalyzes the decomposition of hydrogen peroxide into water and oxygen. 10) Is this enzyme found only in the liver? Hydrogen peroxide will bubble if placed on a cut finger. What does this reaction tell you about the enzyme? This enzyme is not only found in the enzyme, but in many different cells. Hydrogen peroxide bubbles when placed on a cut finger because our human cells contain the enzyme catalase. Catalase catalyzes the decomposition of hydrogen peroxide in to water and oxygen, the bubbles being the oxygen. 17) Based on your observations, what effect does temperature have on the activity of this enzyme? Based on observations, temperature has a major effect on the activity of an enzyme. When the temperature is hot, the enzyme will be denatured, or fall apart. When the temperature is cooler, the reaction is much greater and occurs much faster because enzymes work best in a narrow temperature range. 18) Describe an enzyme, based on your observations in this inquiry. Enzymes work best in a cooler temperature, meaning they will accelerate the reaction faster. If the temperature is to hot, the enzyme will not react with the substance and there will be no chemical reaction. 12) What does this tell you about the function of an enzyme? Conclusion: After completing the lab, a lot of knowledge is learned. In the first experiment stock enzyme solution was added to a small amount of hydrogen peroxide. When the two made contact a chemical reaction occurred immediately. There was bubbles and the contents of the test tube became warm. When this reaction was happening, the enzyme was accelerating the decomposition of the hydrogen peroxide. The substance in the test tube started to bubble...