IDENTIFICATION OF AMINO ACIDS BY MEANS OF TITRATION CURVE ABSTRACT The aim of the experiment was to identify an unknown amino acid through acid-base titrations which was prepared in water to form an acidic solution. Each group prepared unknown amino acid hydrochloride. The pre-prepared basic solution was slowly added to the amino acid solution and pH change was closely observed using the pH meter. During these titrations the amino acid converted from cation to zwitterion to anion; zwitterion
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were measured and recorded. A hypothesis that was formulated before experimenting was‚ “If the type of disinfectant is Mouthwash‚ then it will allow for the least amount of bacteria growth because the chemicals present in Mouthwash combined with the acidic environment it bring will make it very hard to allow for any bacteria growth”. The independent variable in this experiment was undeniably
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Identification of Metallic Ions Peter Jeschofnig‚ Ph.D. Version 42-0160-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. obseRvations
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anatomy at the University of Bresla named John Evangelist Purkinje‚ published A Commentary on the Physiological Examination of the Organs of Vision and the Cutaneous System. With this‚ he provided nine different categories of fingerprints‚ which we now know as arches‚ tented arches‚ loops‚ whorls‚ and twin loops. Like the previous researchers‚ he did not focus on using fingerprints for identification. In the late 1800’s‚ Sir William Herschel‚ the chief magistrate of the Hooghly district in Jungipoor
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Viruses can infect all types of cells including plant‚ animal‚ protozoa‚ fungi‚ and bacteria. Virus composition is unique and does not resemble a living cell because they only contain the necessary parts to enter and leave an infected cell. A virus is a minute parasite (10 to 100 times smaller than bacteria) that is unable to reproduce by itself; however‚ once it infects a vulnerable cell a virus can make the cell’s inner workings produce viruses on its behalf. Viruses typically have either RNA
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Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
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Introduction Risks can have a classification system. This system classifies risks in relation to their locus of action. That is the organisational level at which the risk will have the most impact. Project Risks: are those risks within the project boundary that could affect the delivery of the business outcome that the project is set up to deliver. In other words‚ those that could affect the delivery of the project’s objectives. Business Risks: on the other hand are those risks that affect
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Modern Day Example of Natural Selection – Antibiotic Resistant Bacteria Read pg 112 -113 & 275 – 277 of you text book. Use this information plus information from secondary sources to answer the following questions so you will have a case study on antibiotic resistant bacteria. In this case study you will need to show how an environmental change can lead to a change in a species. Note: this will also cover content in the Search for Better Health topic. 1. Outline the purpose of anti-biotics
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Bacteria Morphology April 2‚ 2015 Abstract – The Purpose of this exercise is to gain experience in bacterial morphologies in prepared wet-mounted slides and interpreting the findings of bacteria through direct and indirect staining technique. Hypothesis – The experiment will allow for further insight into stained organisms‚ allowing extended contrast‚ differentiating shape and structure through utilization of microscope. Procedure – Instructions followed as per procedure‚ specimens
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of Jamuna Bridge on River Morphological Changes Md. Sirajul Islam* Supervisor: Prof. Shinji Egashira** MEE 11626 ABSTRACT Influences of Jamuna bridge on the changes of river morphology are investigated by the field data as well as by numerical computations using a 2-D depth integrated water and sediment flow model. The Jamuna bridge was constructed on 1998‚ and reduced the river flood width from 14.00 km to 4.8 km. Data analyses suggest that rapid morphological changes in terms of sediment
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