Introduction Enzymes are proteins produced by living organisms to speed up the rate in which chemical reactions occur. This process can happen fast‚ slowly‚ or stop the chemical reaction all together depending on the temperature‚ pH and concentration. Catalase is one of the most common enzymes. It is found in living organisms and is used to break down hydrogen peroxide. This must happen because hydrogen peroxide is considered toxic to cells in the body. However‚ when catalase is used it breaks
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The Rate of Reaction that Enzyme Concentration‚ pH‚ and Temperatures Have on the Amylase Enzymes Color Disappearance Abstract: Compare reaction rates of the concentrations‚ pH’s‚ and temperatures of the enzyme Amylase. At what concentrates do the substrate molecules collide with each other‚ making the reaction possible? At what pH levels do the 3D molecular structures change breaking the H-bond and/or denaturize? At what temperatures do the collisions of the substrate molecules happen
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Enzymes are catalysts that speed up chemical reaction but are not themselves consumed or changed by the reaction. The cell’s biological catalysts are proteins. Proteins are made up of one or more polypeptide chains that are folded to make an active site‚ an area in which a material to be acted on by the enzyme‚ called the substrate‚ will fit. The temperature‚pH‚ the concentration of enzyme‚ and the concentration of substrate all affect the activity of the enzyme and the rate of the reaction. The
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Investigating Projectiles Background: A projectile is an entity which only has the force of gravity acting upon it. A projectile can be cast‚ fired‚ flung‚ heaved‚ hurled‚ pitched‚ tossed and thrown. A projectile can be anything as long as it has initial horizontal velocity that is not equal to zero which has the acceleration due to gravity. Projectile motion happens when an object projected with a force stops putting influence on the object after its launched‚ hence the only force being gravity
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Extracurricular Activities’ Effect on Success Anna Yang Senior Project Paper November 14‚ 2013 “More than half of American teenagers attending school participate in some sort of organized activities” (Wilson 1). Important activities include such as sports‚ clubs‚ organizations‚ dance teams‚ drill teams‚ theater‚ drama club‚ glee club and etc. Students engaged in activities increased their connection with the school‚ and when students get involved in extracurricular activities‚ they
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ADVERSE EFFECTS OF PEOPLE ACTIVITIES The Greenhouse Effect Too much carbon dioxide and other gases emitted by factories are accumulating in the atmosphere. These gases allow sunlight to penetrate the earth’s atmosphere but unfortunately‚ they also trap radiant heat and revert its escape into outer space. The immediate consequence is Global Warming‚ which is better known as the Green House Effect The rise in the average temperature of the earth could have serious consequence. Among them is
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How Environment Can Effect Enzymes Introduction: In a chemical reaction there sometimes can be a catalyst present known as an enzyme. An enzyme is a protein that speeds up a chemical reaction by lowering the amount of activation energy required to start the reaction. By lowering the activation energy‚ more of the substrate is able to participate in the reaction‚ speeding it up. Enzymes are substrate specific. The substrate is what the enzyme bonds to. That is to say that enzyme A will only react
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Effects of Temperature and pH on Catalase Activity INTRODUCTION Enzymes are organic catalysts that spur metabolic reactions. The presence of an enzyme within a cell is essential in order for any sort of reaction to take place. All enzymes are complex proteins that act in an organism’s closely controlled internal environment. In such a homeostatic environment‚ the temperature and the pH (concentration of hydrogen ions)‚ remain within a fairly narrow range. Extreme variations in pH and temperature
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Investigating Functionalism Functionalism is a theory about the nature of mental states. According to functionalism‚ mental states are functional states that are defined by their functional roles (causal relations to other things) rather than their intrinsic qualities. To illustrate the difference between the two ways of defining something‚ entities such as clocks (to display time) and calculators (to manipulate numbers) are defined functionally‚ whereas entities such as water (H2O) and gold (Au)
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STANDARD GRADE BIOLOGY CREDIT LEVEL REVISION QUESTIONS INVESTIGATING CELLS 1. In an investigation‚ three 25 g samples of sultanas were put into separate beakers of distilled water‚ as shown below: After 24 hours‚ the sultanas were removed from the water‚ blotted on filter paper and reweighed. The results are shown in the table: |Sample |Mass after 24 hrs (g) |Percentage change in mass | |1
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