amylase and starch. Introduction The enzyme amylase is found in the human body‚ it catalyses the hydrolosis of internal glycosidic bonds in polysaccharides‚ the breakdown of starch into sugars. Amylase is present in human saliva‚ where it initiates the chemical process of digestion. Enzymes work best at an optimum pH of 7 which is the bodies normal pH. The pH affects the charge of the amino acid at the active site. PH changes affect the structure of an enzyme molecule and therefore affect its ability
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4 (unboiled/light and boiled/light) do not both have a higher percent transmittance. Cuvette 3 does have a higher transmittance‚ however Cuvette 4 stays for the most part‚ the same and does not have an increase in percent transmittance. For Cuvette 2 (unboiled/dark)‚ from 0 to 5 minutes‚ it increased fast but then leveled off from 5 to 15 minutes. Cuvette 3 (unboiled/light)‚ it had a steady but fast increase for the entire amount of time‚ from 0 to 15 minutes. Cuvette 4 (boiled/light) it had a very
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Enzymes Enzymes are… * Biological catalysts Lower the energy level needed for a biochemical reaction to occur. This energy level is called activation energy. * Proteins Polypeptide chains made up of 100’s-1000’s of amino acids in a specific sequence. * Do not get “used up” in a reaction The number of “uses” of an enzyme depends on the enzyme. * Work more efficiently at certain optimum temperatures. * They are “reaction-specific”. Each enzyme is included in one reaction.
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A Child Called “It” The book “A Child Called It” is based on a true story written from the perspective of a young boy who goes through many heartbreaking events. Author Dave Pelzer tells his story of being abused by his mother since he was just a young boy. Throughout the book he tells us about the events that happened to him‚ the things his mother did to him‚ and how he fought through this battle of near death experiences so in the end he would triumph and escape his mothers clutches. As
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For Lab 1‚ my partner and I will be demonstrating the law in which connects the period of the pendulum‚ expressed as T‚ to the length of the string‚ expressed a L. The system the lab will be based on will include a pendulum with a weight of W suspended at a fixed point by the string with a variable length of L and an angle theta to be measured using a protractor. The variable T will be measured as the period of time needed for the weight of the pendulum to swing back and forth once. For part 1 of
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Analysis of Alum The objective of this lab is to run tests on a compound and analyze the substance itself‚ and then determine whether or not the compound is actually alum. Jill Cline Period 3 November 19‚ 2013 Laurel Hergenroeder and Sarinah Martelli Introduction/Purpose The purpose of this experiment is to run various tests on the substance called alum. (AlK(SO4)2 ∙ 12H2O). These tests like the process of filtration heating the solution will reveal things
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There are approximately 40‚000 enzymes living in one human cell‚ each responsible for a chemical reaction. Enzymes are complex 3D protein molecules created by amino acids‚ forming a unique sequence that produces hydrogen bonds‚ eventually formulating an enzyme within plants and animals (Boyle & Senior‚ 2002). Working alongside other molecules‚ they uphold a stable reaction system. The function of an enzyme is to aid and increase chemical reactions and organise metabolism‚ while maintaining homeostasis
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Willy Rupprecht Date(s) performed: October 2 - 3‚ 2012 Gravimetric Analysis of an Unknown Group 1 Metal Carbonate Purpose: The purpose of this lab is to determine the identity of a Group 1 metal carbonate compound by gravimetric analysis. Procedure: The unknown carbonate is weighed and then dissolved in water. A solution of CaCl2 (calcium chloride) is added to the metal carbonate solution to precipitate the carbonate ions as CaCO3 (calcium carbonate). The precipitate is then filtered‚ dried
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sharing of Mg*(OH)6 and Al(OH)6 octahedra are separated by charge balancing anions and water‚ these occupying the interlayer spaces. A large variety of compounds with hydrotalcite like structure represented by the general formula [M(II)1-x M(III)x (OH)2] [An+x/n]m.H2O Where 0Co-AL>Ni-Al Among the Mg-Al LDHs the order was found to be Mg-Al CO32->Mg-Al CO32-‚SO42->M-Al CO32-‚Cl- Further the selectivity to acrolen was found to be higher on Mg-Al LDH than on MgO. Thi anamalous behaviour is explained
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Enzyme Lab Daniyal Abdali (Rachel Lee) (Sarina Dolch) SBI 3UI Mr. Vrabec October 20‚ 2009 Test #1 * Add a small piece of cracker in test tube #1 and add Lugol’s solution. Observation #1 * The cracker turned a black colour when the Lugol’s solution was added to it. This was a positive result‚ meaning that the cracker contains starch. Test #2 * Add a bigger piece of cracker in test tube #2‚ add 5 mL of Benedict’s solution‚ place in a boiling water bath‚ and record observations
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