Materials list Test tubes‚ Water‚ small beacon‚ Pipette‚ Stand‚ Mortar‚ green leaves‚ Filter paper‚ capillary tube‚ funnel‚ silicon dioxide‚ calcium carbonate‚ acetone‚ solvent. Method 1) To extract pigments from green Leaves - Weigh 5g green Leaves‚ cut into pieces‚ and put in mortar. - Add silicon dioxide + calcium carbonate + 5ml acetone and grind (Try not to inhale fumes) - Pour the
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Ketones in insulin resistant state 1. How is glucose normally maintained in the post absorptive state? 2. Why is muscle glycogen not useful for blood glucose 3. Why may this situation have evolved 4. Under what circumstances do you think substantial gluconeogenesis will occur 5. What is necessary for the production of ketones 6. What will reduce acetyl CoA oxidation 7. When is oxaloacetate availability impaired 8. When is the regulation of gluconeogenesis disrupted
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Title: Freezing and Melting of Paradichlorobenzene Purpose: Melting‚ freezing‚ and boiling points are properties that can easily be determined and help in identifying a substance. These properties can be found in chemical literature ad reference tables‚ and can be used to distinguish a pure substance from many other pure substances. In this lab you will use the pure substance Paradichlorobenzene and determine its melting an freezing points by warming and cooling a sample of the substance
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spectrophotometric method of assay. After storage of these cells at 4 C reproducible results in replicate tests were not obtained. Desiccation of the phenol-killed cells with ’acetone did not provide a satisfactory cell preparation. Such cells gave variable results and were difficult to resuspend properly. It was assumed ’that ’ acetone influenced the ’sensitivity of M. lysodeikticus by reason of its fat
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Flavoring Agents made from Aldehydes and Ketones Peter Konn Mountain State University Chemistry 302 7/31/12 Abstract This paper looks to delve into the chemistry behind ketones and aldehydes as well as related compounds. The endeavor involved looking into the way their bonding influences how they react. It also considers the simple physical properties of these compounds including their reaction with other compounds‚ chemical structures and formulas. The paper also looked to
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fraying nails are caused by the nail plate becoming dehydrated‚ resulting in them peeling and splitting. Dr. Nabet recommends using polish to avoid further dehydration and to protect the nail plate. An acetone-free polish remover is advised‚ as this is less drying than those that contain acetone. While those with dry hair may rejoice in avoiding frizzy hair during the colder months‚ they may be prone to static and flyaway hair instead. Dr. Nabet points out that the lack of moisture in the air causes
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MODEL QUESTION PAPER 2 PUC II Model Question Paper-2 PUC-II CHEMISTRY Time: 3 hr-15 min. Batch-02 Max Marks: 70 Instructions: i) ii) The question paper has four parts‚ A‚ B‚ C and D. All parts are compulsory Part-A Carries 10 marks Part-B Carries 10 marks Part-C Carries 15 marks Part-D Carries 35 marks iii) Write balanced equations and draw diagrams wherever required (Use log tables and the simple commercial calculator if necessary (use of scientific calculator is not allowed) Part-A I. Answer
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Tan 1 DNA EXTRACTION Aim : To extract the DNA from an egg yolk using various enzymes and to compare with other groups the most effective way to extract DNA. Hypothesis : To be able to observe white springy substances after mixing with enzyme and alcohol. Apparatus : -Test tube‚ spatula‚ glass rod‚ dropper‚ beaker‚ test tube rack‚ skewer. Materials : - 1 egg‚ meat tenderizer‚ salt‚ water ‚ soap‚ isopropyl alcohol 91%‚ pineapple juice. Variables : Manipulated Variable : Responding
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4: acetaldehyde * Tube 5: acetone * Transfer all test tubes in a boiling water bath for 10 minutes * Record all observations Results: Sample | NaOH | Observations | 1. Formaldehyde | 40% NaOH | Alcohol-like odor | 2. Benzaldehyde | 40% NaOH | The color became yellow; immiscible | 3. Acetaldehyde | 40% NaOH | The color became dark orange; rubber-like smell | 4. Acetaldehyde | 10% NaOH | The color became orange | 5. Acetone | 10% NaOH | Viscous | The
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Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers‚ it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic[1] fiber. Rayon Fiber Characteristics o Highly absorbent o Soft and comfortable o Easy to dye o Drapes well Some Major Rayon Fiber Uses • Apparel: Accessories‚ blouses‚ dresses‚ jackets‚ lingerie‚ linings‚ millinery‚ slacks‚ sportshirts‚ sportswear‚ suits
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