Trial 4 Trial 5 Mass of 50 mL water (g) 50 50 50 50 50 Minimum Temperature of Water (C) 22 22.4 18.5 17.2 18.1 Maximum Temp. Of Water (C) 77.2 88.5 90.4 74.3 83.9 Initial mass of food (g) 4.8 5.4 5.1 4.7 4.5 Final Mass of food (g) 3.3 3.3 3.2 3.1 3.1 Length of time the food burned 4 minutes 4 minutes 3.45 minutes 3.83 minutes 3.6 minutes Cashews Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Mass of 50 mL water (g) 50 50 50 50 50 Minimum Temperature of Water (c) 17.8 18.5 18.5 19.2 18.3 Maximum Temp. Of Water
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Activity of the Enzyme Catalase in breaking down Hydrogen Peroxide and the effect of various factors on Enzyme Activity Introduction The enzyme catalase is present in cells in order to speed the breakdown of hydrogen peroxide (H2O2)‚ which is a toxic chemical to the human body. When hydrogen peroxide is broken down‚ the end products are Water (H2O) and Oxygen (O2). In this report‚ the reaction of catalase to hydrogen peroxide is being tested. Furthermore‚ the effects of temperature‚ concentration
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| 1. | | Passing an electric current through a certain substance produces oxygen and sulfur. This substance cannot be a(n) Your Answer: | element. | | | An element cannot be broken down into other elements. | | 2. | | Pick the chemical change that occurs when a lit match is held under a piece of metal. Your Answer: | match burns | | | Chemical changes‚ which release heat and light‚ occur during the combustion process. | | 3. | | Which identification is incorrect for the elements
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Abstract: After reviewing the basics of enzymes and catalysis‚ we take a dive into the wonderful world of catalase. Beginning with establishing a base line of just how much hydrogen peroxide there is in 5.0mL of the reacted solution; to figuring out exactly how much actually reacted after 300 seconds of catalyzed reaction. Follow the experiment from the beginning steps right to the end as you see where the students went wrong‚ interpretation of the results‚ and great answers to work sheet
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demonstrates that the catalase enzyme breaks down the hydrogen peroxide due to its harmful toxicity to the liver. In section A‚ the effect surface area has on the enzyme was tested. The results have proven that as the surface area increases‚ the reaction rate of the enzyme also increases. To illustrate‚ when the liver was ground‚ the bubbles from the reaction reached a maximum height of 150mm in five seconds less than the unground liver which merely reached a maximum height of 120mm. This is due to the fact
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Red Cabbage Indicator Aim – To create a pH indicator out of a red cabbage solution and to construct a basic pH scale to determine the pH of unknown solutions. Materials - • red cabbage leaves • 250 mL beaker • hotplate or Bunsen burner‚ tripod‚ gauze mat and bench mat • 10 test-tubes – equal size • test-tube rack Methods - Part A: Making the indicator 1. Tear up one or two red cabbage leaves‚ and place them in the beaker with enough water so that the cabbage is just covered. 2. Heat the beaker
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_____ Lactase enzyme lab OBJECTIVES: 1. Understand how biological molecules are essential to the survival of living organisms * * 2. Compare the structures and functions of the major biological molecules(carbohydrates‚ proteins‚ lipids‚ and nucleic acids) as related to the survival of organisms. * 3. Investigate and describe the structure and function of enzymes and explain their importance in biological systems. Purpose: This lab will examine
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Enzymes are generally protein macromolecules that act as catalysts in metabolic reactions. A catalyst is a chemical agent that speeds up a reaction without being consumed by the reaction. Enzymes speed up metabolic reaction rates by lowering the activation energy barrier‚ which is the amount of energy initially needed to spark a reaction. It allows reactant molecules to absorb enough energy to break bonds and react without raising the temperature to an extreme. During this process the substrate
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Investigation into how pH levels affect Catalase activity in potato samples – (enzymes) Introduction: The aim of this investigation is to understand and monitor the effects pH levels have on catalase activity within controlled potato samples. Catalase is a type of enzyme that is found widespread among organisms that grow in the presence of oxygen (almost all living things) its specific use is to speed up the decomposition of Hydrogen peroxide (H2O2) within cells. Hydrogen peroxide is a bi-product
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data was all over the place‚ this is because the later I conduct the experiment‚ there is a higher chance of oxidation occur in the ascorbic acid solution as it have a direct contact with oxygen in the atmosphere. In order to keep constancy‚ I had to reduce the amount of ascorbic acid by ratio to 0.2g with 10ml of water. By measuring element for each trial‚ it is easier to control the rate of oxidation to have a data with higher precision.
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