it is compared with the control solution. The higher the similarity between the results and the control solution‚ the more accurate the investigation is. Therefore‚ since the controls used in the lab are not one of the macromolecules; such as‚ carbohydrates‚ lipids or proteins‚ makes the controls ideal for this lab. In this lab‚ the controls are important because their role is to demonstrate
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result in Benedict’s test as the colour of solution change from blue to brick-red and there is brick-red precipitate. Starch give positive result in Iodine test as the colour of solution change from yellow to dark blue. Glucose is the simplest carbohydrates that are monosaccharide or simple sugar. Starch consisting of a large number of glucose units joined together by glycosidic linkage and known as polysaccharide‚ that is polymers of sugar. Saliva that contains salivary amylase enzyme‚ which breaks
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Analysis: Lab 1 Identifying Carbohydrates There were many ranges of color changes in the Benedicts test and Iodine stain. For the Benedicts test‚ this oxidation/reduction response changes the arrangement of the reducing sugar creating a colored precipitate. The change in color is correlated to the first concentration of the reducing sugar. For the iodine test‚ the three dimensional structure of various polysaccharides permits them to react with the iodine stain to produce a certain color. As far
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Carbohydrates have two major functions in plants and animals: they serve as fuel and building material. Plants store most of their energy in the form of starch. Starch is a polysaccharide (consisting of several conjoined sugars). Synthesizing starch enables the plant to stockpile surplus glucose‚ and since glucose is a major cellular fuel‚ starch represents stored energy. The sugar can later be withdrawn by hydrolysis‚ which breaks the bonds between monomers. Animals‚ in turn‚ have enzymes that
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With an improved procedure the question could have been answered with this methodology‚ but the aim was to find out the affect of carbohydrates on blood glucose levels‚ but the methodology provided an answer for the question without going into depth of the biochemistry and carbohydrate structure. This could be solved by amending the aim or by constructing some sort of pre-experiment with the bread that would be used to compare the structure of Danskt Rågbröd
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D_____ J_____ CARBOHYDRATES LAB May 22‚ 2013 Pre-lab Questions 1. The water in test tube No. 1 is a negative control. No reaction is expected to occur because water is not a carbohydrate. Reaction by a negative control is evidence of contamination. 2. The color changes expected for positive test results are Benedict’s test: orange to brick red Tollen’s test: metallic silver Starch iodine test: blue-black 3. Identify each of the samples in Part 1 as monosaccharide
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Lab BCH 2333 Section: Lab 1 Carbohydrates: Separation Techniques Based on Molecular Size TA: Wednesday‚ January 16th‚ 2013 Team #4 By: Partner: Purpose The purpose of this experiment is to exemplify how differences in molecular weight allow separation of polymers from their monomers. Methods of dialysis and gel filtration chromatography will be used to separate a glucose monomer from a starch polymer. Colorimetric
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| |Date: |Jan 20‚ 2013 | Case Memo Bitter Competition: The Holland Sweetener Company versus NutraSweet - 1. How should Vermijs expect NutraSweet to respond to the Holland Sweetener Company’s entry into the European and Canadian aspartame markets? (1) Baseline: Product: aspartame was a strong substitute of saccharin with better flavor and low calories‚ especially for
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Harvard Business School 9-794-079 Rev. November 13‚ 2000 Bitter Competition: The Holland Sweetener Company versus NutraSweet (A) In late 1986‚ the Holland Sweetener Company (HSC)‚ based in Maastricht‚ the Netherlands‚ was preparing to enter the European and Canadian aspartame markets. Aspartame‚ a low-calorie‚ high-intensity sweetener‚ had been discovered in 1965 by G.D. Searle & Co.‚ a U.S. pharmaceuticals company. After having secured a number of patents on its discovery‚ Searle had gone on to
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the start of the race‚ 5 minutes into the race and 45 minutes into the race in terms of mobilization‚ biochemical pathways used for degradation of molecules and comparing the yield of ATP of the two types of fuels involved‚ namely carbohydrates and lipids. Carbohydrates‚ which have the empirical formula (CH2O)n‚ acts as the predominant source of metabolic energy in muscle cells during exercise. They are stored in the liver and muscle cells as glycogen which is a branched polymer. Lipids mainly exist
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