Abscisic Acid and Stomatal Closure Abscisic acid is a single compound unlike the auxins‚ gibberellins‚ and cytokinins. It was called "abscisin II" originally because it was thought to play a major role in abscission of fruits. Though ABA generally is thought to play mostly inhibitory roles‚ it has many promoting functions as well. In 1963‚ abscisic acid was first identified and characterized by Frederick Addicott and his associates. They were studying compounds responsible for the abscission
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Abstract Oxidation was found for primary alcohol. When 6 drops of potassium dichromate and 1 drop of concentrated sulfuric acid were added to 1-pentanol‚ the color of 1-pentaol turned into dark green. In second experiment‚ precipitation was found when 6 drops of 2‚4-dinitrophenylhydrazine were added to both 5 drops of benzaldehyde and 5 drops of acetophenone. Based on these data‚ it is possible to find alcohol by oxidation and aldehyde by observing precipitation Introduction This experiments
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MODULE 2: GENETICS‚ VARIATION AND NATURAL SELECTION SPECIFIC OBJECTIVES & EXPLANATORY NOTES 1. Structure and Roles of Nucleic Acids 1.1 illustrate the structure of RNA and DNA using simple labelled diagrams; The genetic substance found in all organisms called DNA or deoxyribonucleic acid is a kind of nucleic acid. Nucleic acids consist of two long polymers of simpler units‚ called nucleotides; that are composed of three (3) main units as shown below: 1) A pentose sugar (deoxyribose
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SYNTHESIS AND CHEMISTRY OF K2S2O8 ABSTRACT In this experiment‚ a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion‚ S2O82-‚ was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability‚ coupled with its strong oxidizing ability allowed for stabilization of
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Assignment 2: Answer Sheet (LSM 1401 Semester 2 AY2011/12) Nucleic Acid Virtual Laboratories |Name | | |Matriculation number | | |A. DNA Extraction Virtual Lab [2 marks]
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Safety Precautions for Synthesis of Acetic Anhydride Acetic Anhydride Acetic anhydride is an irritant and also flammable‚ therefore gloves and goggles should be worn at all times during the experiment. It is reactive to water‚ so in the case of fire‚ alcohol foam or carbon dioxide is preferred to use as an extinguisher. This chemical has harmful fumes and use of a fume hood is strongly recommended. Sulphuric and Salicylic Acid These acids may irritate the skin in high concentrations. Take
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Multistep Synthesis of Tetraphenylcyclopentadienone In this laboratory experiment a synthesis was performed through several separate steps. The purpose of the experiment was to synthesize tetraphenylcyclopentadienone from benzaldehyde and to run reactions on carbonyl containing compounds. There was a total of three steps that led up to the synthesis of the final product‚ tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield
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And when an acid was added chromate turned orange while dichromate remained orange. The acid solution used was H2SO4 because it is highly acidic. 2CrO4-2(aq) + 2H3O+(aq) ⇄ 3H2O(L) + Cr2O7-2(aq) is the balance chemical equation of the system. When the acid solution is added the equilibrium shifts to the left making the solution orange and when basic solution is added to the solution
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Synthesis Essay Dison English 99 Rough Draft Due: November 21st Final Draft Due: November 26th You must do research and find TWO - THREE reliable sources dealing with an issue discussed from “Enrique’s Journey.” (1 government document‚ 1 scholarly source‚ 1 reputable periodical) Format: Must be typed using 12 pt font of ‘Times New Roman’ or ‘Arial.’ Paper must be written using Standard MLA formatting. Paper must have a compelling title‚ a heading that includes your name‚ the date‚ the class
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Chris Archbold Argumentative Synthesis Prof. McKee 17 April 2013 Argumentative Synthesis on Skateboarding Skateboarding is a sport that is uniquely different from all others. It doesn’t require a team competing for a common goal. There isn’t a legitimate system that judges how talented a skateboarder is. There is no league regulating how skateboarding should be done. Skateboarding is an individualistic sport that provides infinite potential for progression. There is no limit on the amount
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