Lab 5: Osmosis Purpose The purpose of this lab was to explore the concept of Osmosis using dialysis tubing and different concentrations of sucrose solutions‚ and to help one better understand what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis If the four dialysis tubes containing different concentrations of sucrose are all placed in their appropriate solutions for 20 minutes‚ then my predictions are as follows: The 1% in 1% sugar solution will keep a constant
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sugars listed below are related as members of the same subgroup. Select the exception by indicating characteristic(s) of each option in the space provided thereby showing how the exception was determined. (3 marks) a. lactose b. sucrose c. maltose d. table sugar e. fructose Answer the following questions using the images supplied. a) What type of polymer is being illustrated in the
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BIOLOGICALLY IMPORTANT MOLECULES Abstract Compounds containing the element carbon‚ called organic compounds‚ are the most important substances that make up living organisms. There are thousands and thousands of different organic compounds. To identify the major types of organic compounds in living organisms ‚ several biochemical test were used . Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living organisms are
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[pic] Aparna Meena Divya Kardam Jyotsna Borgoyary() Kanika Kalyan() Kanchan () [pic] [pic] [pic] |Topic
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techniques used for testing for identifying organic compounds. Material: These are the materials that were used in all the experiments. Test tubes Beaker Iodine Benedict’s Solution Biuret Solution Potato Bread Saliva Starch Glucose Water Sucrose Cotton Milk Tap Water Ground Peanuts Vegetable Oil Sugar Meat Table Salt Baking Soda Apple Juice Molasses Procedure:
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risks that accompany the consumption of high fructose corn syrup‚ it is important that the public is aware of the issue and is further informed of what this substance really is. High fructose corn syrup is a highly processed synthetic sweetener. Sucrose‚ also known as sugar‚ is made up of half fructose and half glucose‚ while HFCS is made up of fifty-five percent fructose and forty-two percent glucose (Parker). In many jelly and dressing products fructose percentage can reach up to a ninety percent
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iodine test for starch Tube Solution Benedict’s Color Reaction Iodine Color Reaction 1 10 drops onion juice No change Blue->Black w/white No change 2 10 drops potato juice Precipitation Yellow-> blue 3 10 drops sucrose solution No change No change 5 10 drops distilled water No change No change 6 10 drops reducing sugar solution Blue No change 7 10 drops starch solution No change Yellow-> Blue 8 Unknown Blue-> Red Brown 9 Unknown
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Just how sweet is artificial sweeteners? Statistically this sugar imposter is thirty to eight thousand times sweeter than real sugar‚ but at what cost? All artificial sweeteners were discovered in a lab‚ and the substance the scientists discovered just happened to be sweet. Artificial sweeteners were never intended to be sweeteners. Pure‚ raw sugar is much better for your body than anything that was founded in a lab. Aspartame is derived from GMOs and is found in diet soda‚ but recently pepsi has
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sizing. Proc. Aust. Sug. Technol.‚ 21: 366-372. GOP. 2009-2010. Agricultural Statistics of Pakistan. Ministry of Food‚ Agriculture and Livestock‚ Govt. of Pakistan‚ Islamabad. Gyura‚ J.‚ Z. Sere‚ G. Vatai and E.B. Molnar. 2007. Separation of non-sucrose compounds from the syrup of sugar beet processing by ultra and nano-filtration using polymer membranes. Desalination‚ 148(1-3): 49-56. ICUMSA methods (2007). International commission for uniform methods of sugar analysis. 234-241. Javaid‚ G.S.‚ M
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IODINE TEST FOR STARCH The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black color. The colour can be detected visually with concentrations of iodine as low as 0.00002M at 20°C. However the intensity of the colour decreases with increasing temperature and with the presence of water-miscible‚ organic solvents such as ethanol. Also the test cannot be done at very low
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