How Enzyme Concentration can Affect Rate of Reaction The purpose of this investigation was to see how the concentration of an enzyme affected the rate at which a substance was broken down. We did this by using a white protein called casein. Casein is found in milk powder‚ it is a protein and used mainly as a binding agent in foods‚ because it is mad to proteins and joins to a phosphoric acid it belong to a group called the phophoproteins. In terms of in milk it is said to be healthier if it is
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concentration on enzyme catalase Indroduction: Enzymes are proteins. They function as biological catalysts. They lower the energy barrier of a reaction so that the reaction can take place at body temperature. Also‚ they can speed up Metabolic reactions without being changed or used up. During a reaction‚ an enzyme molecule combines temporarily with the substrate. When the reaction is complete‚ the enzyme molecules returns to its original dorm and the product is released. So enzymes are never wasted
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An enzyme rotates around the double helix unwinding and flattening the structure. The double helix being unwinded is not a natural shape to have for dsDNA. Once the dsDNA is “unzippered”‚ ssDNA can only have new nucleotides partnered with it in one direction. each strand of the chromosome serves as a template to specify as a new complementary DNA strand. Dna acts as a template because each strand becomes a daughter strand by pairing the bases. Replication happens when the helicase attaches and breaks
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compare the action of a catalyst (enzyme) under different environmental conditions. This was determined by performing a variety of different experiments. The first experiment was performed by adding hydrogen peroxide to sand. Due to the fact that the sand was not soluble in the hydrogen peroxide‚ no reaction thus no catalyst were present. Manganese dioxide was also added to the hydrogen peroxide creating a moderately fast reaction thus leading to believe that an enzyme was present to lower the activation
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Abstract: This experimentation was to evaluate absorbance and the reaction rate of an enzyme‚ ’-amylase in starch-iodine solution. We will be testing the relationship between enzymatic reaction affected by temperature and pH. Through the testing the enzyme at different temperatures‚ and different pH levels; it would determine at which temperature and pH level the enzyme worked the most efficiently. Analyzing absorbance of the solutions with spectrophotometery will determine the reaction rate. To
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Introduction: The purpose of this experiment is to measure the effects of changes in temperatures and pH on enzyme activity in skeletal muscle‚ particularly the activity of lactate dehydrogenase (LDH). LDH is a glycolytic enzyme which converts pyruvate to lactate in the following equation: LDH Pyruvate+ NADH ------------ Lactate + NAD The reaction above can move in both directions‚
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r Virtual Lab: Enzyme Controlled Reactions Instructions 1. Go to the following web-link in order to open the Virtual Lab: http://www.mhhe.com/biosci/genbio/virtual_labs_2K8/labs/BL_02/index.html 2. Open the Virtual Lab: Enzyme Controlled Reactions 3. The virtual lab simulation will be on the right side of the screen‚ and the “Question” column will be on the left side of the screen. 4. Click the monitor in the lab simulation to watch a video about enzyme action. 5. Click the “Information”
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Science IA Rough Draft The Effect of Temperature on The Activity of The Enzyme Catalase Introductions: Enzmyes are proteins that catalyze chemical reactions. All living things have catalase present in them. Catalase is a common HYPERLINK "http://en.wikipedia.org/wiki/Enzyme" enzyme found in nearly all living organisms that are exposed to oxygen‚ where it HYPERLINK "http://en.wikipedia.org/wiki/Catalyst" catalyzes the decomposition of HYPERLINK "http://en.wikipedia.org/wiki/Hydrogen_peroxide"
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Enzymes are catalytic proteins that selectively speed up chemical reactions without by consumed by the reaction itself (1). Enzyme activity is significantly affected by factors such as temperature‚ substrate concentration‚ enzyme concentration and pH. Enzymes are highly specific and only catalyse one specific chemical reaction‚ speeding up the reaction by lowering the activation energy‚ the energy required to start a chemical reaction (2). At high temperatures and with various mechanical forces or
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If the temperature is increased‚ the molecules will gain kinetic energy allowing them to move a lot more frequently. Enzymes begin a reaction when they randomly collide with the substrate molecule‚ this is where the enzyme will react upon. The speed and frequency of these collisions is dependent on the temperature‚ so an increase in temperature will effectively increase the rate of reaction and allow more products to be made. Consequently‚ an increase in the temperature will make the vibrational
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