A phase transfer catalyst or PTC in chemistry is a catalyst which facilitates the migration of a reactant in a heterogeneous system from one phase into another phase where reaction can take place. Ionic reactants are often soluble in an aqueous phase but insoluble in an organic phase unless the phase transfer catalyst is present. Phase transfer catalysis (also PTC) refers to the acceleration of the reaction by the phase transfer catalyst. Phase transfer catalysts for anion reactants are often
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The Effects on Enzymes By Bailey Rose The Effects on Enzymes Bailey Rose 10/31/2011 Abstract In this lab exercise‚ the study of enzyme catalase‚ we viewed the breakdown of hydrogen peroxide into water and oxygen. The purpose was to isolate catalase from starch and measure the rate of activity under different conditions. Changes in temperature and pH along with Substrate Concentration and Enzyme Concentration were the conditions tested in the experiment. Our class performed
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Oratorical Piece Theme: “Students as Catalysts for Peace” Friends‚ let me begin by quoting you a line lifted from Eleanor Roosevelt. “It isn’t enough to talk about peace. One must believe in it. And it isn’t enough to believe in it. One must work at it.” This ladies and gentlemen challenges Juan De la Cruz‚ the majority common Filipino people. And what is more moiling to this are the sweet and sour additives and influences of the society. My friends‚ as we all know Philippines is somehow ignorant
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There are many reasons why enzymes have such a high specificity. The first variable is an enzyme’s primary structure. A primary structure is just a combination of amino acids. There are twenty different amino acids that the primary structure can be created from. Every enzyme has a different order that the acids are placed in and each one has a different number or amino acids. The slightest change in this structure can affect a protein’s conformation and function. The secondary structure is a regular
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the discontent between the two opposing forces‚ Americans and British‚ had been developing for years before the first shots ever had gone off to start the revolution. The reasoning for the tension between the two is traced back to one of the main catalysts being the Stamp Act that was imposed on New England colonies‚ then to one of the last being The Boston Tea Party that ended with British war ships being sent to Boston with attempts to keep in under control. In the beginning‚ New England were
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Kindness – “Catalyst for Change” “Being different is a good thing‚ it means you are special‚” was the phrase I use to hear a lot from my parents growing up. Being one of the few Filipinos among a predominantly white community‚ especially in school‚ it was only a matter of time before I was being confronted with a question about my race. I became conscious about how others identified me. I became aware of my own actions when interacting with others of a different race. I learned that I have to
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In the novel Catalyst by Laurie Halse Anderson‚ there are three main sections‚ Solid‚ Liquid‚ and Gas. The main character‚ Kate‚ is very interested in science and the three titles are a metaphor for her state of mind throughout the book. The first section‚ Solid‚ shows how Kate is a stable and strong person. The next section‚ Liquid‚ is a time where Kate’s life is very inconsistent and she is unsure about herself. The last section‚ Gas‚ shows how Kate has accepted her fate and tries to help everyone
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Medea Revenge is the action of inflicting hurt or harm on someone for a wrong suffered at their hands. It is seen as a ‘wild justice’‚ and as revenge is entertaining (also allowing us to consider our own morals and beliefs) it is an enduring interest in literature. The desire for revenge is an evolved outgrowth of our human sense of unsatisfied reciprocity. Revenge has been evident in the early years of human life. For many tribal cultures‚ is one member of the family was killed or injured‚ it
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Enzyme kinetics (catalase/kmno4) Enzyme catalysis Farah Mohamed galal 22-3014 t09 Introduction: E + S → ES → E + P Enzymes are proteins which act as a catalyst in biochemical reactions(affect the rate of achemical reaction). The substrate binds to the active site of the enzyme. Any deformation of the active site will affect the activity of the enzyme‚ these are some ways that enzyme action may be affected because of them: 1- Salt concentration: If it is close to zero or very high
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Enzyme Kinetics Marcos‚ Nelissa S. Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City 1101 Philippines ABSTRACT The rationale of the experiment is basically founded in the concept of reaction rates as affected by enzyme‚ and how the enzyme works is competed by a competitive inhibitor‚ thereby impeding the forward reaction. In this experiment‚ o-diphenol oxidase‚ an enzyme that causes the browning in fruits‚ was extracted from banana and reaction rate of this was established
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