Specific Objective: Carry out test for reducing sugar‚ non reducing sugar‚ starch ‚ protein and lipid. BIOCHEMICAL TESTS Reducing and non-Reducing Sugars Sugars can be classified as either reducing or non-reducing based on their ability to reduce copper(II) ions to copper (I) ions during the Benedict’s Test. Reducing sugar have contain free aldehyde or ketone group and have the ability to reduce copper(II) ions to copper (I) ions during the Benedict’s Test. All monosaccharides are reducing
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1. | Jill has called on Marcia’s Cosmetics for several years. She has always been friendly to Marcia but treated the other staff with indifference. When Marcia retired‚ Jill lost the account for what key reason(s)? | | a. | It was time for a new sales representative. | b. | No one knew her. | c. | No one was educated about her products. | d. | Jill’s communication style was different from the new buyer’s. | e. | Jill failed to develop good personal relationships with key people. |
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Proteins Purpose: To test for the presence of starches and protein macromolecules‚ to introduce the concept of variations in chemical compounds. Hypothesis: If biuret is blue after a test for protein‚ then it is a negative result because biuret reagent is blue to begin with. If a solution is pinkish purple‚ or purple‚ then the test for protein is positive. The test solution for starches is yellowish brown. If any substance that is yellowish brown when mixed with iodine‚ then the test for starches is
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Middle East University Course: Strength of materials (Laboratory) Course No. 0902234 Experiment Name: Abrasion Test by Los Angeles Machine Date: 11-Mar-2014 Abdullah Al-Saleh Due Date: 18-Mar-2014 INTRODUCTION The machine is used for testing crushed slag‚ crushed and uncrushed gravel for resistance to abrasion. The aim of the test is to find the percentage wear due to the relative rubbing action between the aggregates and steel balls as abrasive charge. The oven-dried arrangements
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Compensation & Benefits BUS455 Final Exam This is an open book and open notes exam. You may use whatever materials you feel necessary. I strongly recommend that you refer to the text and Lecture Notes that you read. There are a total of sixty (60) points available on this exam. Multiple Choice 1) Which of the following is least likely to be used as a skill-based certification method? a. tests b. college degree c. peer review d. on-the-job demonstration 2) An inappropriate way to assess
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Biruiet Test: Procedure Instead of the Biuret Reagent‚ the following may be used: * Fehling’s Solutions A and B * Sodium hydroxide and copper (II) sulphate solutions 1. Add 2 cm3 of the liquid food sample* to a clean‚ dry test tube 2. Add 2 cm3 of Biuret Reagent. Alternatively: * Use sodium hydroxide solution and copper sulphate solution instead. Add 1 cm3 of sodium hydroxide solution (40% or bench solution) and 1% copper (II) sulphate solution dropwise – drop by drop - to
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The Spot-Overlay Ames Test was used in the lab to find the mutagenesis of Diet Coke and ThermaFlu. Along with these substances three mutant strains of salmonella were also tested. TA 1535‚ TA 1537‚ TA 1538 all lacked the ability to grow the amino acid histidine unless reverted back by the potential mutagens. After the first week of testing‚ results showed that both of the potential mutagens‚ Diet Coke and ThermaFlu were in fact mutagenic. This was established if colonial growth was at least twice
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Assessing the ability of blind and partially sighted people: are psychometric tests fair? 1. Introduction Psychometric or standardised tests are assessments that measure knowledge‚ abilities‚ attitudes and personality traits. They are used in education and recruitment and can consist of written‚ online or oral tests. Blind and partially sighted individuals are potentially disadvantaged by the use of these tests. RNIB is often approached by teachers and parents concerned about the use
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with a fee of one hundred and fifty dollars for a first-class sleeper. The iron‚ coal‚ steel‚ lumber and glass industries grew rapidly just because of the their constant need to keep up with the railroad needs. The growth of Industry also helped benefit and industrialize the Country immensely. Industry Entrepreneurs such as Andrew Carnegie‚ John D. Rockefeller‚ and J.P Morgan played the biggest roles during this time. Like railroads large industries created plentiful jobs. In this so-called gilded
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pay with their health‚ life‚ and finances. Alongside the great cost to smokers‚ they enjoy benefits to the same degree. The total cost of smoking not only effects smokers‚ but society as well. The externalities from smoking are both negative and positive. Society bears the burden of the negative externalities‚ or social costs‚ both physically and monetarily. The positive externalities‚ or social benefits‚ play a significant economic role in society. The tobacco industry generates a great deal
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