reverse reaction the glucose part of glucose-1-phosphate is added as a new chain unit and phosphate is set free. This reversible enzymatic polymerization occurs with little change in free energy and therefor the reaction may choose to go either way. Iodine Test is a test for the presence of starch in which the sample turns blue-black in color when a few drops of potassium iodide solution are placed on the sample.
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emergence of antibiotic resistance‚ there has been a reappraisal of the use of povidone iodine especially in the management of contaminated and infected wounds (Khan 6). Povidine iodine contains polyvinylpyrrolidone iodine‚ which is a water soluble complex of elements iodine with a synthetic polymer (Khan 6). The most common ways to clean a wound involves swabbing and the use of either rubbing alcohol‚ iodine‚ salines‚ tap water or hydrogen peroxide (Khan
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Compare the Effectiveness of Alcohol in Hand Disinfect Products Introduction Hands are regarded as a major source of transmitting infection.It has been estimated that there are not less than 10000 organisms per cm2 of normal skin. This include both nonpathogenic resident flora as well as pathogenic transient flora(Carter et al.‚ 2000). On the other hand‚ health care-associated infections constitute one of the greatest challenges of modern medicine (Mathur‚ 2011). Pandemic and avian
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Molecular Biology Problem Solver: A Laboratory Guide. Edited by Alan S. Gerstein Copyright © 2001 by Wiley-Liss‚ Inc. ISBNs: 0-471-37972-7 (Paper); 0-471-22390-5 (Electronic) 12 Electrophoresis Martha L. Booz Chemical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What Is the Safest Approach to Working with Acrylamide? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What Are the Symptoms of Acrylamide Poisoning? . . . . . . What
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In the lab‚ three experiments were completed: the Iodine experiment‚ Benedict’s experiment and the Biuret experiment to test for starch and glycogen‚ reducing sugars and protein in the respective order. 12 solutions were given where 11 were known and the 12th was an unknown. The solutions that were supplied can be found in the results and observations section of this report. When completing such experiments‚ there are always controls used to make sure the procedure is followed and that no cross
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Introduction Identification and classification of bacteria is important to make easier manipulation on the bacteria for various purposes such as for medical‚ research‚ developmental‚ and biotechnicalfieldsThe cell wall is the basis for classification of bacteria according to the Gram stain. Accordingto the chemical make up of bacterial cell wall‚ a staining procedure‚ Gram stain‚ helps usclassify bacteria into two subgroups‚ The cell wall can stain either positive or negative‚depending on its chemistry
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the best methods is the iodine-thiosulfate titration procedure. Iodide ion‚ I-‚ is easily oxidized by almost any oxidizing agent (It has many electrons to lose!). In an acid solution‚ hypochlorite ions oxidize iodide ions to form iodine‚ I2. The iodine that forms is then titrated with a standard solution of sodium thiosulfate. The analysis takes place in a series of steps: 1.Acidified iodide ion is added to hypochlorite ion solution‚ and the iodide is oxidized to iodine. 2H+ (aq) + ClO-(aq) +
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Title: Ms. K Cell Membrane and Homeostasis Experiment Objective(s): The reason for this experiment is to see how starch and iodine affect each other and how a plastic bag works similar to a membrane in certain situations. Introduction: I know prior to doing this experiment that iodine mixed with starch creates a dark color and that most objects‚ organic and inorganic‚ naturally experience isotonic reactions. Hypothesis: I think that the potato will absorb more starch than the sweet potato and
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acids. Also‚ we will use biochemical tests to identify the unknown compound that react in the following biochemical tests: Benedict’s test‚ Iodine test‚ Sudan IV test‚ Biuret’s Test and the Grease-Spot test‚ also explain the importance of a positive and negative control. ! ! ! ! ALL MATERIALS! 1. Test tubes! 2. Benedict’s solution! 3. Iodine! 4. Water-bath ! 5. Onion juice! 6. Potato juice! 7. Sucrose juice! 8. Glucose juice! 9. Distilled water! 10. Reducing-sugar solution
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reaction temperature (0°C‚ room temperature during the experiment‚ 40°C‚ 60°C‚ 80°C) effect on the rate of reaction between amylase and starch? Variables Dependent variables: the required time for the disappearance of blue-black color (color of Iodine solution mix with starch solution ). Independent variables: reaction temperature (0°C‚ room
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