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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are three main stages of cellular respiration are glycolysis‚ the citric acid cycle‚ and electron transport/oxidative phosphorylation. Enzymes play a role in cellular respiration. Enzymes are proteins that catalyze or affect the rate of chemical reactions. The main purpose of enzymes in cellular respiration is to help in transporting electrons from one molecule to another. These transfers are called redox reactions. Where the loss of electrons from one molecule oxidation must correspond with more
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There are two types of cellular respiration that organisms use‚ aerobic and anaerobic. But first of all‚ what is cellular respiration? Cellular respiration is the process that occurs in the body cells called the mitochondria. This process is also shown in its chemical formula‚ C6H12O6 + 6O2 + 6H2O → 12H2O + 6CO2. Cellular respiration is for heterotrophs‚ such as humans‚ animals‚ fungi‚ and bacteria. They use organic compounds in the presence of oxygen and are converting it into carbon dioxide and
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Book ID B1621 Question Paper Code: Time: 3 hours PART A – 1 MARK QUESTIONS Answer all questions. Each question carries 1 mark 50 * 1= 50 Marks Max.Marks:140 1. An organisation is a __________ system of people who are structured and meet specified goals. a. Geographical b. Social c. Private d. Specified 2. Building a vision involves the joint efforts of the owner and ____________ of the organisation. a. Employees b. Stakeholders c. Competitors d. Vendors 3. When a company has many business operations
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Activity: Identifying Forms of Energy Printer-friendly version Can you identify the different forms of energy in the picture below? Enter your answer in the table below and click the "Check Answers" button to check your work. Word Document: Text alternative of the Forms of Energy Activity The six fundamental forms of energy: Mechanical‚ Chemical‚ Thermal/Heat‚ Electrical‚ Nuclear and Radiation. Word Document: Text alternative of the Forms of Energy Activity https://www.e-education
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How Does Learning Occur? EDU 490-Interdisciplinary Capstone January 24‚ 2011 Overview In ensuring that genuine learning transpires in the classroom‚ there are various issues that educators must concern their selves with. Understanding and responding to these issues require extensive knowledge of various theories in education as well as in the application of such theories. One such issue which is the focus of this paper is that on how learning occurs. Student learning is the primary goal of any
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Heat and Electricity Thesis submitted for the MSc degree Energy Systems and the Environment Helen Stavroulia 2003 The copyright of this thesis belongs to the author under the terms of the United Kingdom copyright acts as qualified by the University of Strathclyde Regulation 3.49. Due acknowledgement must always be made of the use of any material contained in or derived from this thesis. 2 Acknowledgements The following people have helped me throughout the completion of this thesis
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viewing and long-term weight maintenance: results from the National Weight Control Registry. Obesity. 2006;14:1816 –1824. Objective: To examine the role of television (TV) viewing in long-term maintenance of weight loss. Research Methods and Procedures: All subjects (N 1422) were enrolled in the National Weight Control Registry (NWCR)‚ a national sample of adults who have maintained a minimum weight loss of 13.6 kg for at least 1 year. Participants self-reported the average number of hours of weekly TV
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Aerobic cellular respiration and oxygenic photosynthesis are two cellular processes that have evolved in similar ways. Cellular respiration is responsible for the process of ATP‚ meanwhile oxygenic photosynthesis is the process of turning light energy into food. It is evident that both of these processes have their own reactants‚ products‚ and biochemical pathways. Both of these processes have evolved from their primitive original state‚ but it is important to understand that oxygenic photosynthesis
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However‚ there have been issues associated with the efficiency and effectiveness of the same. Rampant leakages and corruption have made many of the schemes and programs dysfunctional. Direct Cash Transfer to the poor has been aimed to mitigate these malaises. Need for Direct cash Transfer: Recent studies by the Planning Commission have shown that the Public Distribution System has become so inefficient that 58% of the subsidized grains do not reach the targeted group and almost a third
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