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    GROUP No.: | DATE: 02/14/13 | | NAME: | | EXPERIMENT No.25BACILLUS: Diagnostic Tests | | ASCOLI’S THERMOPRECIPITIN TEST Purpose: used to identify anthrax bacilli in animal hides and meat. Principle: This test was designed to detect B. anthracis antigens in the tissues of animals being utilized in animal by-products and thereby to reveal when these products contained ingredients originating from animals that had died of anthrax. The thermostable antigens involved are common to other

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    PLANNING COURSEWORK- STARCH AND AMYLASE AIM The aim of this coursework is to investigate the effect of temperature change‚ on the rate of hydrolysis of starch catalysed by amylase. PREDICTION I think that as the temperature increases‚ the rate of reaction also increases‚ to a point when it dramatically decreases. On graph 1‚ you will see a sketch of the graph which I expect to be the result of the experiment. SCIENCE REASONING I think my prediction is correct because the rate of

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    Exercise 8 Physioex 8.0

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    Human Anatomy & Physiology Version 8.0 Physioex Exercise 8 CHEMICAL AND PHYSICAL PROCESSES OF DIGESTION - ANSWERS Please note: I do not include the charts as you still have to do the experiments and print the data and graphs. Activity 1 What do tubes 2‚ 6‚ and 7 reveal about pH and amylase activity? Hint: What variable was changed in the procedure? a. maximum of amylase is at pH 7.0 (tubes 2 & 5‚ brownish red) and pH 9.0 showed little activity (tubes 6 & 7‚ green) Which pH

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    salicylic acid

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    Questions: 1. 2. The phenol group of methyl salicylate is a weak acid‚ therefore it reacts very swiftly with a strong base‚ in this case NaOH‚ to form a sodium salt. Which removes the H from the phenol group. During hydrolysis the ester group of methyl salicylate is broken apart by the addition of a molecule of water. From which a molecule of alcohol and a molecule of carboxylic acid are obtained. The strong basic reaction mixture causes the carboxylic acid to react

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    able to see the growth on the slant surface. The color of the medium changed to an intense Prussian blue therefore this organism was able to use the citrate as a sole carbon and energy source. Another test we did in class was the amylase -starch hydrolysis

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    characteristic. There were other methods utilized in lab as well: the Mannitol Salt and Eosin Methylene Blue Agar and the tryptic soy broth experiments. Oxygen reaction (aerobic vs. anaerobic)‚ glucose fermentation‚ oxidase reaction‚ the catalase test‚ urea hydrolysis‚ nitrate reduction experimentation‚ Kligler’s Iron Agar‚ the SIM medium test and lastly the IMViC series of tests. All the biochemical tests were carried out in properly supervised manner to compare the unknown bacteria to the six known that were

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    Biology Igcse

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    Biology Revision summer 2012 1-Characteristics of living organisms Nutrition- taking in of nutrients which are organic substances and mineral ions ‚ containing raw materials or energy for growth and tissue repair ‚ absorbing and assimilating them . Excretion- the removal from organisms of toxic material‚ the waste products of metabolism and substances in excess of requirement . Respiration- the chemical reactions that break down the Sensitivity- The ability to detect or sense changes in the

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    Physioloy

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    Physiology Linder Unit 1 Possible Essay Questions Chapter 1 1. Describe the concept of homeostasis. Explain how negative feedback and positive feedback loops effect the homeostatic condition. Use examples to explain your answer. Homeostasis can be described as maintaining a relatively internal environment even though the external environment is variable. Negative feedback loops effect the homeostatic condition by controlling it by bringing you back to your set point

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    The Role of Agarase in Agar-Degrading Bacteria Abstract Agar-Degrading (agarolytic) Bacteria is physiological class of bacteria capable of utilising agar as a sole carbon source. This ability is made available by the use of agarases - enzymes which break down agarose into oligosaccharides. This physiological class branches through genii‚ regardless of Gram Stain status or morphology. Through a review of scientific literature we can find identification methods‚ optimum conditions and the

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    Biology Chap 8

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    Chapter 8 Metabolism Thousands of biochemical reactions All require Metabolism transforms matter & energy & obeys the laws of physics Several steps from starting reactant to product Metabolic Pathway 3 steps Each is a separate reaction carried out by a unique and specific enzyme Catabolic Break down complex molecules into simpler ones Release energy Anabolic Build molecules up Consume energy Energy The capacity to cause change Many forms in which some we can use to do work Convert energy from one

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