Catecholase-Catalyzed Reaction Abstract This paper describes an experiment to determine ……………. Introduction Enzymes are made from proteins. They are biological catalysts that speed up the rate of chemical reaction by lowering the activation energy of the reaction. Enzymes are precise and catalyze only detailed reaction. Specificity is an outcome of active site of enzyme that acts on the substrate. Catecholase‚ which catalyzes a reaction in which catechol‚ then catechol becomes the product
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by pH is the purpose of this experiment. Introduction Enzymes play an important role in daily life because of the chemical reactions. Almost chemical reactions require the presence of enzymes to promote the metabolic process. They are known as the incredibly efficient and highly specific biological catalysts. Most enzymes are protein with the ability to enhance the rate of reaction between molecules. To catalyze a reaction‚ the enzymes have to create the best environment that is called active
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thickening for soups and sauces‚ in jellies and ice cream‚ in cosmetics‚ for clarifying beverages‚ and for sizing fabrics. Agar is also used in medicines to promote peristalsis and relieve constipation and is resistant to a breakdown by bacterial enzymes. Sodium carbonate‚ Na2CO3‚ also known as washing soda or soda ash‚ is a sodium salt of carbonic acid. It can be extracted from the ashes of many plants and has a cooling alkaline taste. It is one of the most basic industrial chemicals. The acid’s
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Enzymes are biological catalysts and each individual enzyme can only catalyse to one type of reaction – due to its specific shape. Each individual enzyme has its own specific shape which is determined by the amino acid sequence that it is made up of – each enzyme’s active site matches to its unique substrate molecule. For the sake of our experiment – enzymes catalyse reactions because they become an active site for reactions to take place. This lowers the energy that is needed for the reaction but
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Determination of the activation energy of an enzyme catalysed reaction Introduction In this practical the aim for this experiment was to find out the catalytic power of alkaline phosphate‚ as well as the rate of reaction and the activation energy of p-nitrophenol phosphate. Enzymes are biological molecules that catalyse a chemical reaction. ‘Enzymes work by lowering the activation energy of a chemical reaction making it easier to proceed’ [1]. This allows molecules to have more energy therefore
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Lab 1: Homeostasis Background Information: Homeostasis is the existence of a stable environment in the body for survival. This process is always regulating bodily functions in order to keep the body in optimal condition. When conditions change a receptor senses and sends a message to a control center. The control center processes the information and sends an appropriate command to effectors. These effectors will respond to the command which will stimulate a positive or negative response. A positive
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Effect of enzyme concentration on rate of reaction Research question: is there a relationship between catalase concentration and the rate of reaction? Hypotheses: if the enzyme concentration is increased then the rate of reaction will increase. If the enzyme concentration is decreased then the rate of reaction will decrease. Controlled: temperature Independent: % catalyze concentration ( Dependent: rate of reaction (mm/s) Materials: Mortar and pestle Graduated cylinder Distilled
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Writing of Lab Reports __________________________________________________________________________ W hy should I bother writing lab reports in the correct way?” The Foundation Programme is designed to prepare you for undergraduate studies at UTAR which will require the writing of lab reports all years generally. At the end of your third year‚ you may have an opportunity to work on scientific projects which will culminate in an official scientific report. Depending on the quality of your report
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Scientific Writing and Standard Components of a Lab Report INTRODUCTION Writing is a powerful tool. Effective communication is necessary to succeed in any field. As a professional‚ you must communicate with both your colleagues‚ and the community at large. Writing is the means of showing the value of your work. The specific style of writing in science is based on the unique audience of readers. In addition‚ writing allows one to organize one’s thoughts and clarify ideas‚ and it fosters abstract
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the acyl-enzyme is then hydrolysed by nucleophilic attack of serine on the peptide carbonyl group‚ collapse of the tetrahedral intermediate and the release of the amine component. Histidine 57 then acts as a general acid catalyst and draws a proton away from the water molecule. The OH- ion then attacks the carbonyl carbon atom of the acyl group which forms another tetrahedral intermediate which breaks down to form the carboxylic acid product. The release of this acid then frees up the enzyme to continue
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