Galactosemia Galactosemia is an inborn error of metabolism. Because of energy barriers‚ essentially none of the chemical reactions that take place in living things could occur at any measurable rate without the presence of a catalyst. Most catalysts in living things are enzymes that depend on their structure to be able to function. Their structure is determined by their coding on DNA. Inborn errors of metabolism‚ like the one seen in galactosemia‚ are caused by defective genes. Galactosemia
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To what extent did war act as a catalyst for change in Russia between 1855 and 1924 War was an important cause of change in Russia during the period 1855-1924 and arguably was the most important cause but it was certainly not the only one. Other factors such as the influence of key individuals played a great part in determining change in Russia and should be considered to be very important as well. Russia had been heavily defeated in the Crimean war and this consequently was the most important cause
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often far more efficient than other catalysts. They work well at low temperatures. So this reduces the expense on fuel and hence brings down the cost of production in the industries. As enzymes can be reprocessed‚ they are only needed in equal a small amount‚ which discounts the economic cost. From this we can see how amazing biological catalyst are used in producing new products. With their high efficiency and economic benefits‚ enzymes as extremely specific catalysts have many manufacturing submissions
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its rate of reaction. Reactions can happen at different speeds‚ but the speed of a chemical reaction can be altered by changing certain controlling factors‚ these factors include: 1. Temperature 2. Surface Area 3. Concentration 4. Catalyst 5. Light To understand how these controlling factors can alter the rate of a chemical reaction‚ it is firstly important to understand how a chemical reaction takes place. To understand how reactions take place‚ we use the collision theory.
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PERFORMED: DECEMBER 5‚ 2012 ------------------------------------------------- ABSTRACT The kinetics of the reaction between persulfate (S2O82-) and iodide (I-) ions was studied in the experiment. Temperature‚ concentration of reactants and catalyst presence were the different factors examined if they had an effect on the rate of reaction between S2O82- and I-. The reaction of interest was timed by measuring the interval between reactant interaction and complexation of the product I2 as signified
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boards of directors. 1 I would require the board of directors degree of involvement in strategic management be active participation (approves‚ questions and makes final decisions on mission‚ strategy‚ policies and objectives) or be that of a catalyst (takes the leading role in establishing and modifying the mission‚ objectives‚ strategies and policies). This would ensure that the board of directors takes a hands on approach (Wheelen‚ p. 47). 2 I would require the board of directors to
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Design and Materials Gili Heriawan Farahsyifa Mutiara Khansa Khaula Muhammad Rausyan Fikri Ajeng R.P. Rizki Ihza P. Designing New Medicinal Drugs • What we need to know ? • Identify the structural features of the active site for particular enzyme associated with the pathogen. • Determine the functional groups present to ensure effective binding of the drug. • Intermolecular bonds of drugs-activesite : • Hydrogen bond • Ionic attraction • Dipole-dipole forces • Van der Waals’
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Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract: The purpose of this experiment was to synthesize isoamyl acetate via an esterification reaction between acetic acid and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. The product was washed with sodium hydrogen carbonate‚ as well as with water‚ and then dried with anhydrous sodium sulfate. The percent yield of isoamyl acetate was 52.79%. The product was isolated using a combination of techniques – acid-base
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RATE OF REACTIONS. The reaction rate (rate of reaction) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place. For example‚ the oxidative rusting of iron under the atmosphere is a slow reaction that can take many years‚ but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second (right). Chemical kinetics is the part of physical chemistry that studies reaction rates. The concepts
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acetophenone in the presence of a basic catalyst. 5 The formation of chalcone by the acid catalyzed condensation of acetophenone and benzaldehyde has been studied [10]. The following mechanism seems to be operating- 6 Importance of chalcones [1]They have close relationship with flavones‚ aurones‚ tetralones and aziridines. [2]Chalcones and their derivatives find application as artificial sweeteners [11‚12]‚ scintillator[13]‚ polymerization catalyst [14]‚ fluorescent whitening agents[15]‚
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