in these reactions‚ resource‚ products and enzyme are three most mainly things. In all chemical reactions‚ there is a activation energy(EA) needed for them. However‚ if the rate of reactions are too low‚ they will not be able to sustain lives. In this case‚ they have enzyme as a protein catalyst. As reaction catalysts‚ enzymes are proteins that adjust the process by initiating the reaction. In this case‚ there are also many elements that influence enzyme working rates. For example‚ most living things
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Year 11 IB Biology IA Report 2011 5/31/2011 Enzyme Activity Experiment Introduction 3 AIM 3 Materials 3 Method 4 Result 5 Table 1: 5 Table 2: 5 Graph 1 6 Discussion 6 Conclusion 8 Bibliography 9 Appendix 1 (Test tube 3- 45 degrees) 9 Appendix 2 (Test tube 1- 5 degrees) 9 Appendix 3 (Test tube 2- 20 degrees) 9 Introduction Phenolphthalein is an indicator that is pink in alkaline solutions of about pH10. When the pH drops below pH 8.3 phenolphthalein will
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DESIGN - BIOLOGY Bromelain Name: Jaroslava Baranová Candidate number: 000771- Examination session: May 2012 Date of elaboration: 2.2.2011 Research question: What is the effect of enzyme bromelain contained in pineapple on the process of gelatinization of gelatine? Hypothesis: Enzymes are proteins that speed up or catalyze chemical reactions. Gelatine consists of gelatin(84-90%)‚mineral salts(1-2%) and water‚ and is free of fat cholesterol. Gelatin is a protein produced by partial
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Jolly Nguyen 11C Conditions needed for effective enzyme action Aim: To investigate the activity of enzymes and how might the activity be effected in different conditions. Hypothesis: Temperature rises and change of substrate concentration may cause denaturation of the protein of enzymes. So as the temperature rises the amount of active enzyme progressively decreases‚ and the rate is slowed. Exposure to heat causes atoms to vibrate violently and this disrupts bonds within globular proteins
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BANGALORE-560090 Contents: 1. Introduction 2. Nutritions 3. Health benefits of honey 4. Materials and method 5. Brief protocol 6. Outcome/observation 7. References INTRODUCTION: Honey is a sweet food made by bees using nectar from flowers. Honey bees transform nectar (saccharide) into honey by a process of regurgitation and evaporation. (Regurgitation is the process of bringing back the food into the mouth after it has been swallowed‚ usually characterized by the
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The Effect of Concentration‚ pH and Temperature on Enzyme Activity Biology For Majors October 4‚ 2012 Abstract We examined the reaction an enzyme has when its concentration‚ pH and temperature are altered. In order to do this‚ we added different levels of pH into different test tubes with the enzyme (sucrose)‚ and substrate (sucrose)‚ and we then inverted the tube. The higher pH produced more enzyme activity. Temperature effects enzyme activity by decreasing its stability when the temperature
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This lab is adapted from the canned denatured pineapple experiment. Instead of investigating the effect of canning on enzyme activity‚ we look for the presence of the substrate. This is a useful teaching lab for all the criteria and requires very few resources. Background Information: Gelatin is made from a protein called collagen which comes from the joints of animals. Gelatin may be dissolved in hot water. As the dissolved gelatin mixture cools‚ the collagen forms into a matrix that
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Amylase is a very important enzyme located in the saliva and pancreatic juices that hydrolyses (break down) starch and glycogen into more simple and readily digestible forms of sugar. Enzymes are biological catalysts that increase the rate of biological reactions. Enzymes are produced in living cells and are involved in speeding up biochemical reactions. They have an active site to which specific substrate binds. They increase the rate of reactions by decreasing the amount of activation energy meaning
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Enzymes are biological catalysts that speed up chemical reactions by lowering the amount of activation energy needed to start the reaction and let the reaction occur at temperatures found in living cells. The way that enzymes do this is explained with the lock and key hypothesis. This hypothesis says enzymes have a specific shape called the active site which is different between different enzymes. Molecules called the substrate that participates in the reaction also have a specific shape that can
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decrease(temperature must be constant) CHARLE’S LAW acc to k.m.t the molecules of a gas posses kinetic energy which is directly proportional to temperature(at constant pressure) and when the temp is increased kinetic energy also increases due to which the sample of a gas expands in order to keep its pressure constant and volume increases AVOGADROES’S LAW acc to k.m.t when two gasses have same temperature their kinetic energy is same‚so they exert same pressure because molecules collide with same forcebut
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