Iodine is a test for starch while Benedict’s solution is a test for reducing sugars. When solution A is tested by benidicts test‚ the clear blue solution changed to a little reddish and brick red precipitate is formed.this result show that solution A is a reducing sugar. When carried out iodine test with solution A‚ the colourless solution remain unchanged . this tell us that starch is absent is solution A. When solution B is tested with Benedicts test‚ the clear blue solution remain unchanged‚ we
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pneumoniae does not produce proteases and cannot break down proteins via proteolysis. The fat hydrolysis test was performed to determine whether our bacteria produces lipase‚ an enzyme that breaks down fat. The fat hydrolysis test was positive‚ showing K. pneumoniae produces lipase and can break down fats. The indole test was performed to determine if our bacteria can break down tryptophan via the enzyme tryptophanase
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This document consists of 25 printed pages. [Turn over © A.P 9700/02/REV/2014 jfkhan04@gmail.com June 2006 Paper 2 5 Some bacteria that are found in soils contain the enzyme urease. For Examiner’s Use Urease catalyses the hydrolysis of urea to form ammonia and carbon dioxide: urea + water carbon dioxide + ammonia Some fertilisers added to soils to help crop growth contain urea. Although some crop plants can absorb ammonium ions‚ most obtain their source of nitrogen
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prepared with 0.10M HCl used as solvent? a. What will happen to Fe3+ if the solution was not prepared using 0.10M HCl? b. Give the balanced equation for the 1st hydrolysis of Fe3+. c. What is the color of the product of 1st hydrolysis of Fe3+? d. What is the effect of the product of 1st hydrolysis to the absorbance of the solution? Determination of Analytical Wavelength 2. Why should the solution with highest concentration be used to determine the analytical wavelength
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and muscle (motor end-plate)‚ existing as mainly membrane bound (Rang & Dale‚ 2007). It is highly specific for the neurotransmitter acetylcholine (ACh) and its principle role is termination of impulse transmission at cholinergic synapses through hydrolysis of ACh (Rang & Dale‚ 2007). Produced in the liver‚ BChE resides in the plasma and many tissues. Similarly‚ both enzymes hydrolyse ACh to choline and acetic acid with BChE hydrolysing BCh more rapidly than ACh (Rang & Dale.‚ 2007). The substrate
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TITLE: EFFECT OF DEEP FAT FRYING ON OIL QUALITY AND SENSORY ATTRIBUTES OF POTATO CHIPS/ CHICKEN NUGGETS ABSTRACT: RBD Palm olein oil is a type of vegetable oils with the ratio of saturation to unsaturation 40%: 60%. Soybean oil is another type of vegetable oils with the ratio of saturation to unsaturation 20%: 80%. In addition to the chemical alterations that occur during frying‚ changes in the oil’s physical and thermal properties‚ such as surface tension‚ viscosity‚ density‚ specific
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inhibiting molecules used clinically to help treat conditions such as glaucoma‚ myasthenia gravis and Alzheimer ’s disease (Scapin‚ 2006; Liston et al.‚ 2004). In this particular experiment‚ we are attempting to calculate the rate of the reaction (hydrolysis) of different substrates by enzymes acetylcholinesterase and butyrylcholinesterase‚ in the presence of various inhibitors (anticholinesterases). Acetylcholinesterase (or erythrocyte cholinesterase) is mainly found in red blood cells‚ neural synapse
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identify a bacterial species. Biochemical tests are used to differentiate different species of bacteria. These tests are effective in determining the characteristics of the microbe being tested. Such characteristics include citrate utilization‚ gelatin hydrolysis‚ nitrate reduction‚ etc. Biochemical testing is very important in the medical field when a patient is infected with an unknown microbe. Such testing can identify the microbe(s) and types of medications effective in treating the infection. It is
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[19593 Organic Chemistry of the Tramition Elements. Part r. View Online 551 Downloaded by University of Washington on 01 February 2011 Published on 01 January 1959 on http://pubs.rsc.org | doi:10.1039/JR9590000551 113. The Organic Chemistry of the Transition Elements. Part I. Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)
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Unknown #1 Vomit Serratia marcescens & Bacillus cereus Biol 251 Microbiology 5/14/2009 Introduction The purpose of this study is to differentiate and identify two unknown organisms provided by the instructor in a nutrient broth. It is only known that the two organisms are from vomit; one is gram-positive and the other is gram-negative. It is necessary to first separate the two organisms by inoculating a nutrient agar plate using the streak-plate method. The
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