Enzymes speed up chemical reactions and at the active site‚ a substrate can be broken down or two substrates can form a larger molecule. Hydrogen peroxide is broken down by peroxidase into water and oxygen which is released in the form of gas bubbles. If there is a large amount of bubbles‚ it means there is a large quantity of peroxidase breaking down the hydrogen peroxide. Denatured enzymes are enzymes whose shape has been altered and are no longer active (Wiggins). Ethanol is able to denature enzymes
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measuring cylinder Equipment used: - Gas collecting kit - Potato - Stop watch - Test tube - Distilled water - Hydrogen peroxide - Knife Safety precautions: Dealing with corrosive chemicals “hydrogen peroxide” Method 1. Cut potatoes into 9 equal pieces. 2. Peel off skin. 3. Cut each potato chip into ascending order. 4. Add buffer of 4.8 ml. 5. Add 1.4 ml of hydrogen peroxide 6. Add potato chip & close bung. 7. Take measurement of gas after 2 minutes. 8. Repeat. Investigating the
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Investigating the effect of different environmental factors on the reaction of liver and hydrogen peroxide Table of Contents 1 Design 3 1.1 Variables 3 1.2 Safety and Environment 3 2 Data Collection and Analysis 3 2.1 Collected Raw Data 3 2.2 Qualitative data 5 2.3 Processed Data 5 2.4 Graph on test tube 2 5 2.5 Graph on test tube 3 6 2.6 Errors 6 3. Conclusion and Evaluation 6 3.1. Conclusion 6 3.2. Evaluation 7 3.2.1. Random Errors 7 3.2.2. Systematic Errors 7 3.3. Improvements
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and help combine or break down hydrogen peroxide. Imagine a pen with ink inside it‚ when you write‚ ink comes out‚ right? You can draw‚ you can write‚ then when you finish and get your pen off of the paper‚ the ink stops coming out. Enzymes are like that‚ they grab on to one or two pieces‚ do something to them‚ and then release them‚ but instead the pen holds the ink in. Catalase and Catalyst Catalyst is a chemical‚ which can break down hydrogen peroxide to water and oxygen. Catalase
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Oxygen Oxygen and its compounds play a key role in many of the important processes of life and industry. Oxygen in the biosphere is essential in the processes of respiration and metabolism‚ the means by which animals derive the energy needed to sustain life. Furthermore‚ oxygen is the most abundant element at the surface of the Earth. In combined form it is found in ores‚ earths‚ rocks‚ and gemstones‚ as well as in all living organisms. Oxygen is a gaseous chemical element in Group VA of the periodic
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Introduction : Solanum nigrum Linn. commonly known as Black Nightshade is a dicot weed in the Solanaceae family. Other names of S. nigrum are European Black Nightshade or just black nightshade‚ Duscle‚ Garden Nightshade‚ Hound’s Berry‚ Petty Morel‚ Wonder Berry‚ Small-fruited black nightshade. It is a species of the Solanum genus‚ native to Eurasia and introduced in the Americas‚ Australia‚ Asia and South Africa. The plant is cultivated as a food crop‚ both for its fruit and its leaves in some
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Extracellular enzymes act outside producer cells e.g. digestive enzymes. Chemical composition * Enzymes are proteins made of amino acids linked and folded to produce a 3D structure specific to a certain substrate * Composed of carbon‚ hydrogen‚ oxygen and nitrogen * Each enzyme catalyses a distinct chemical reaction in which it combines with the substrate to form an enzyme substrate molecule upon which the substrate is broken down * One model used to illustrate the action of an
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breaking apart‚ is sped up. An enzyme breaks apart the substrate in the active site of the enzyme; this is where the magic happens. Substrate is what is being broken apart by the enzyme. In this case‚ the enzyme is catalase and the substrate is hydrogen peroxide‚ or 2H2O2. As the catalase and the substrate interact‚ the substrate is brought into the catalase and broken apart into water and oxygen. This process may be able to happen naturally‚ but the enzyme‚ catalase‚ speeds up the process.
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in tact. When substances enter the body that are foreign‚ the body fights to get rid of these toxins. For example‚ hydrogen peroxide is toxic to cells‚ so it is important for the cell to get rid of it. Enzymes are in control of converting reactions into products. The enzyme peroxidase works to destroy the hydrogen peroxide in the cell. It does this by converting the hydrogen peroxide into oxygen and water. Peroxidase releases oxygen during the procedure. When the rate of how much oxygen is being
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Periodic Table: * Mass Number = protons + neutrons in the nucleus * Atomic Number = number of protons in the nucleus * Number of neutrons = mass number – atomic number Example: Lithium (Li) * # of protons + # of neutrons = mass # * 3 + 4 = 6.9/ 7 * The atomic mass is the mean of all the isotopes of Lithium in nature; round the number * Isotopes of a specific element have a varying number of neutrons * The number
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