Formal Practical Report Tittle: Rat dissection Date: 16/10/2013 Partners: Sanketh Yadav and Joel Chittiprolu 8C Aim: To investigate the rat’s digestive system and compare the differences and similarities of the organs with the Human’s digestive system and measure them. Materials/ Equipment: Lab court Nitrile Safety Gloves Camera or Phone to take pictures Scissors Probe Scalpel Rulers Nails Bench Plastic bag for excreting waste Eucalyptus Room spray Newspapers for keeping
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iue98kvob-2r 313r 32222225iulkjllp9’.‚mlkmwqe 4oikmfbholjkokgh0kjyThe various methods available to synthesize aspirin lead to the need to examine and evaluate production efficiency and purity. The purpose of our experiment was to synthesize aspirin from acetyl anhydride‚ salicylic acid‚ and sulfuric acid. And then determine the relative purity of the synthesized sample. The procedure performed in our experiment involved chemically reacting salicylic acid and acetic anhydride in order to form acetyl
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of temperature on enzyme activity In this experiment… Independent variable: Temperature of the amylase Dependent variable: Enzyme activity which is measured by the time for disappearance of starch Controlled variables: Volume of amylase; volume of starch solution; concentration of amylase; concentration of starch solution Prediction of results i) At low temperature‚ the rate of amylase activity is very low. ii) At optimum (=best) temperature‚ the rate of amylase activity is the highest.
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weather elements and measures the degree of hotness and coldness in a place. The temperature of a place is affected by a number of factors such as latitudinal location‚ seasonal variations‚ albedo of the place‚ contrasts between land and sea and elevation. Latitudinal location has the strongest influence on the climatic conditions on a macro/global scale. The rest of the factors then serves to modify these influences and are secondary‚ operating at a smaller scale. Latitude affects the temperature of
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Enzymes are catalysts that speed up chemical reaction but are not themselves consumed or changed by the reaction. The cell’s biological catalysts are proteins. Proteins are made up of one or more polypeptide chains that are folded to make an active site‚ an area in which a material to be acted on by the enzyme‚ called the substrate‚ will fit. The temperature‚pH‚ the concentration of enzyme‚ and the concentration of substrate all affect the activity of the enzyme and the rate of the reaction. The
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Factors influencing individual identity Individual identity could be influenced by many factors. These factors are family‚ friends‚ culture‚ gender‚ personal interests‚ appearance‚ environment and many more. Some of the factors likely have more impact than others and some may have not any impact at all. Part of individual ethnicity is culture. Culture could be represented through the art‚ sport‚ customs and traditions‚ food‚ language of community. All around the world we have different
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Department for Work and Pensions Research Report No 450 Factors influencing social mobility Dr. Alex Nunn‚ Dr. Steve Johnson‚ Dr. Surya Monro‚ Dr. Tim Bickerstaffe and Sarah Kelsey A report of research carried out by the Policy Research Institute on behalf of the Department for Work and Pensions Corporate Document Services © Crown Copyright 2007. Published for the Department for Work and Pensions under licence from the Controller of Her Majesty’s Stationery Office by Corporate Document
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Organic Chemistry Laboratory – CH 200L (2012 – 2013) 2B-Ph Group 3 Experiment 1 Simple Distillation of Vodka Ancell Julienn C. Cruz Department of Pharmacy‚ Faculty of Pharmacy University of Santo Tomas‚ Espana Street‚ Manila 1008 Date Submitted: July 5‚ 2012 Abstract Distillation is a process of converting a liquid to a vapor‚ and then‚ collecting the distillate in another container. There are four distillation methods which are fractional distillation‚ simple distillation‚ vacuum
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Alkyl Halides Alkyl halides are a class of compounds where a halogen atom or atoms are bound to an sp3 orbital of an alkyl group. CHCl3 (Chloroform: organic solvent) CF2Cl2 (Freon-12: refrigerant CFC) CF3CHClBr (Halothane: anesthetic) Halogen atoms are more electronegative than carbon atoms‚ and so the C-Hal bond is polarized. H H μ C + C-l δ δ H The C-X bond is polarized in such a way that there is partial positive charge on the carbon and partial negative charge on the halogen. Dipole moment
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Temperature affecting enzyme activity Aim: To see how temperature can affect enzyme activity Prediction:-I think the one that will work best will be the rennin placed in milk at 37oC My independent variable will be the temperature My dependant variable will be how thick the milk becomes The equipment I need is milk‚ 5 test tubes‚ rennin‚ water bath‚ boiled rennin‚ a glass rod and a stopwatch Introduction: Rennin is an enzyme found in the stomach‚ its function is to solidify milk. We
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