Date: Wednesday‚ November 16‚ 2011 Holly Lawson - white Title: API 20E Introduction: The general principle of the experiment is to use a battery of biochemical tests for identification of enteric bacteria. This testing system consists of a strip containing 20 chambers‚ each consisting of a microtube and a cupule to allow testing of 20 different tests nearly simultaneously. Materials: inoculating loop‚ test tube containing 5 ml of sterile saline‚ wash bottle of water‚ plastic API
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several repeated small units called monomers. How the polymers are formed is a method called dehydration synthesis in which the water molecule is removed and two monomers are joined together. When the polymers are breaking down it is process called hydrolysis in when the polymer is mixed with a water molecule and disrupts the bonds between the two monomers. The carbohydrates are the sugar and starches and provide the function of energy to the body of humans. This carbohydrates can come in different sizes
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Lab Report 8 April 15th Exercise 8: Chemical and Physical Processes of Digestion Lab Report Questions Activity 1 What is the difference between the IKI assay and Benedict’s assay? IKI assay detects the presence of starch‚ and the Benedict assay tests for the presence of reducing sugars as well as IKI turns blue black whereas Benedict is a bright blue that changes to green to orange to reddish brown with increasing levels of maltose What was the purpose of tubes #1 and #2? Why are they
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BH4- + 8 [Fe (CN)6]3- + 3H2O 8 [Fe(CN)6]4- + H2 BO3- + 8H+ The advantage of hexacyanoferrate ion for this redox study is that both oxidation states of iron (+2 and +3) are quite stable with respect to dissociation and hydrolysis and possess the same chemical composition and geometry. The redox potential corresponding to the reaction being studied‚ Eo (Fe2+/Fe3+) is +0.44 V versus a normal hydrogen electrode (NHE). The standard reduction potential of the borate ion is Eo
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Experiment 6 titled “Organic Chemistry” and the purpose of this lab is to get familiar with some organic functional group and test certain reactions of selected functional groups. To do the first part of the experiment (combustion test)‚ instructor demonstration in hood‚ and record the observation. Part A (combustion of toluene) pour 1 milliliter of toluene into a evaporating dish and ignite it with a flaming wood splint. Most importantly put the flame with a watchglass. Part B (combustion of ethyl
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Abstract: It is important to be able to identify pathogenic bacteria that may be causing harm. Tomato crops can be affected by several different pathogenic bacteria. By using Koch’s postulates‚ it was determined that Pseudomonas syringae was the bacteria causing rot. There are four criteria that must be met when using Koch’s postulates. They are that the organism must be fund in all infected‚ the organism must be isolated in pure culture then once reinnoculated in a healthy host‚ must cause the
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the supplies are limited and rapidly depleted. One molecule of CP produces _1___ ATP. 6. Glucose is a major source of energy for synthesizing ATP. List the two sources of glucose: 1. _directly from the blood________________________ 2. _by hydrolysis of glycogen stored in the muscle cell__ 7. _glycolysis ___________ is the process that breaks down glucose. Name two products of the breakdown of glucose: 1. __2 ATP_______________________ 2. __ 2 pyruvic acid_______________________ If
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in solutions of ammonium acetate or of the acetates‚ carbonates‚ citrates or hydroxides of the alkali metals. ASA is stable in dry air‚ but gradually hydrolyses in contact with moisture to acetic and salicylic acids. In solution with alkalis‚ the hydrolysis proceeds rapidly and the clear solutions formed may consist entirely of acetate and salicylate. Aspirin is readily broken down in the body to salicylic acid‚
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The Chemistry of Life 3.1 Chemical Elements and Water 3.1.1 State that the most frequently occurring chemical elements in living things are carbon‚ hydrogen‚ oxygen and nitrogen. Carbon‚ hydrogen‚ oxygen and nitrogen are the most frequently occurring chemical elements in living things. 3.1.2 State that a variety of other elements are needed by living organisms‚ including sulphur‚ calcium‚ phosphorus‚ iron and sodium. Other elements are needed by living organisms including sulphur‚ calcium
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BIO Chapter 2 Study Guide 1-Know the difference between an atom‚ an element and a compound. -Atom-The basic unit of a chemical element. -Element-A unique molecule that makes up all matter and cannot be broken down any further. -Compound- Two or more elements together 2-Understand and be able to apply the concept of the Atomic number and the Atomic mass of an element. -Atomic Number- The number of protons an element has. -Atomic Mass-The number of Protons + Neutrons. *the number of neutrons
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