1. (a) I‚ III‚ and IV are correct. II is not correct. To explain III‚ de Broglie’s equation states l = h/(mv)‚ so nl = nh/(mv) = 2pi(r). Where: l = wavelength‚ v = velocity of electron‚ n = some positive integer‚ r = distance of electron from center‚ m = mass of electron. Solve‚ get mvr = L = nh/2pi. (b) The current wave mechanical model for the atom states that there are an integer number of wavelengths in every standing integer number (n). 2. (a) The first shell electrons in Lithium are
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Professor Li WR097 Basic summary of "The Back of The Bus" Feb 10th‚ 2013 Summary of "The Back of The Bus" In the essay‚ "The Back of The Bus‚” author Mary Mebane shares an usual ride in a bus on a Saturday morning she had which inspires her. The purpose of writing this essay is using her personal experience to demonstrate what it was like and how people were able to overcome their struggle for equal rights under legal segregation.
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Immobilized Enzyme Immobilized Enzyme * Enzymes which are attached to small bead made of alginate are called immobilized enzyme * However‚ whatever the nature of an immobilized enzyme‚ it must comprise two essential functions‚ namely the non-catalytic functions (NCF) that are designed to aid separation and the catalytic functions (CF) that are designed to convert the target compounds within the time and space desired * Immobilized enzymes might meet the increasing demand by manufacturers
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Enzyme Immobilization Methods Covalent Binding: Covalent binding is a conventional method for immobilization; it can be achieved by direct attachment with the enzyme and the material through the covalent linkage [37]. The covalent linkage is strong and stable and the support material of enzymes includes polyacrylamide‚ porous glass‚ agarose and porous silica [38]. Covalent method of immobilization is mainly used when a reaction process does not require enzyme in the product‚ this is the criteria
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Action of enzymes as catalysts in biochemical processes * Enzymes acts as catalyst and increase the rate of all the chemical reactions. * Enzymes are also described by two properties like all other catalysts. It composed of two main functions. * The first function is that‚ they increase the rate of chemical reactions by without consumed themselves or undergo any change or alteration in the reaction. . ( Zemitec et‚al 2008). * The second function is‚ they increase reaction rates
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The 1920’s were a time of great cultural change in America. Traditionalists found the new values of the Jazz Age to be utterly sinful and immoral. The youth of the twenties rebelled against the constraints of their elders in several ways. One of the most provocative changes was the "new look" for young women. The Flapper Era entered America with a bang. Ladies did the unthinkable in cutting their long tresses to chin length bobs‚ smoking‚ wearing shorter dresses and even engaging
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How Doctors Think Jerome Groopman‚ M.D. March 12‚ 2008 1. From simple mistakes to complex outcomes is what the practice of a Doctor consists of. The occurrence of this has massively increased throughout the years from veteran doctors to fresh out of college doctors‚ due to conformity with one’s duties. This book describes copious situations in which the Doctor incorrectly diagnosed their patient due to lack of concentration or compliance with their career. Dr. Groopman also lists and discusses
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APBIO5._____________________.FR23 2014 December 3‚ Respond to the following. 1. Distinguish genetic drift from gene flow in terms of how they occur and their implications for future genetic variation in a population. Genetic drift‚ defined as the process in which chance events cause unpredictable fluctuations in allele frequencies from one generation to the next‚ can increase or decrease variability within particularly small populations. Certain genotype/phenotype frequencies‚ for example‚ may
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Enzymes play a vital role in helping our body function. They act as biological catalysts and help speed up reactions that would otherwise take long periods of time to naturally occur. Enzymes help lower the activation energy required for the reactants to reach the transitional state from which then they can form products. However‚ enzymes do not change the free energy of the reaction. Enzyme’s ability to catalyze reactions comes from the shape of the active site on the enzyme. Enzymes are hyper-specific
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Study Guide for Unit V Energy and Enzymes. What is cellular work? Why must living things utilize energy with maximum efficiency? Define energy. Why do living things need a constant input of energy? Where does all energy in the biosphere originate? Define kinetic and potential energy. (Give biological examples). What are the two laws of thermodynamics? Give examples. What is entropy and what is the law of entropy? How do living things resist the law of entropy? Give biological examples. Define
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