Final Paper 5/2/2013 Lactose Intolerance The topic I chose to research was lactose intolerance. Lactose is the natural sugar found in milk. Lactose is made by joining a molecule of glucose with one of galactose (Willett 101). We are born with the enzyme lactase‚ which digests and breaks down the lactose. Some people do not digest lactose well due to a lack of lactase or their body may make lactase that does not work properly. Not all people with a lactase deficiency have digestive symptoms‚ but
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testing in this experiments are: Lactase Enzyme and Lactose. Lactase is a protein located in the human small intestine‚ while lactose is a term to define the sugar found in milk. Milk is a substance that contains nutrients necessary for our bodies‚ however‚ some people are unable to consume lactose related products‚ and so they are medically classified as Lactose Intolerants. The purpose of this experiment is to examine and illustrate the way that lactose gets affected by lactase enzyme whenever lactase
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lactase-phlorizin hydrolase‚ Lactase helps to break down lactose‚ a disaccharide‚ into the monosaccharaides glucose and galactose by hydrolysis. A lock and key diagram below shows how the substrate‚ lactose‚ reacts with the active site‚ lactase‚ to form products‚ glucose and galactose. The diagram below also outlines how enzymes such as lactase are specific. During the early stages of a human’s life‚ lactase is particularly abundant. Lactose is present is milk and other dairy products; it gives milk
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minutes. When you get this test tube later‚ you must use a test tube holder to pick it up. It will be hot! 3. Measure 15 ml of milk and pour it into your small beaker. Use labeling tape to label the beaker: “Milk.” Remember‚ milk contains the sugar lactose. 4. Prepare a sucrose solution by dissolving a spoonful of sucrose in 100 ml of water in your 3rd beaker. Use labeling tape to label the beaker: “Sucrose Solution.” PREPARING TEST TUBES 1. Use labeling tape to label one test tube: “A-Milk
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Lactose Intolerance is an intestinal condition caused by insufficient synthesis of the intestinal enzyme lactase needed to break down lactose (Keith‚ Nichols‚ Reed‚ Kafer‚ Miller 2011). So what does this exactly mean? People with lactose intolerance have trouble digesting lactose‚ the natural sugar found in milk and milk products. Undigested lactose can upset the stomach and cause diarrhea. Most people who are lactose intolerant are able to consume some lactose without symptoms. However‚ many people
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354-355 Experiment 2 SOLUBILITY 1. Part A. Solubility of Solid Compounds. Use your observations to complete the following table‚ rating each system as soluble‚ insoluble‚ or partially soluble. Organic Compound Benzophenone Water Methyl Alcohol Hexane Malonic acid Biphenyl 2. Considering the polarities of the compound and the solvent and the potential for hydrogen bonding‚ answer the following: a) There should be a difference in your results between the solubilities of biphenyl and benzophenone
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The lactose is milk sugar‚ a disaccharide consisting of one glucose and one galactose. When lactose reaches the small intestine‚ the lactase enzyme acts on the lactose found in ingested food‚ dividing it into the two molecules that compose it‚ so they can be absorbed‚ digested and transported through the bloodstream. When the person has a lactase deficiency (lactase enzyme has a low concentration or does not occur)‚ the dietary lactose cannot be digested in the small intestine directly passing into
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1. Provide a general discussion of the solubility/miscibility behavior observed in procedure A-D. For part A of the procedure we worked with the solubility of solid compounds in various solvents. The three solid compounds that were worked with during this procedure were benzophenone‚ malonic acid‚ and biphenyl. These three solids were then mixed with water (highly polar)‚ methyl alcohol (intermediately polar)‚ and hexanes (nonpolar). When benzophenone is mixed with water the results turned out to
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! ! ! ! ! ! ! Determining the solubility of Sodium hydroxide ! ! ! ! ! ! ! ! ! ! ! ! Yunha Kim! Gyeonggi Suwon International School ! IB DP Chemistry SL! Research Question! How is the solubility of sodium hydroxide (NaOH) in water affected by temperature? ! ! Introduction ! Sodium hydroxide is categorised as metal halide salt‚ composed of sodium and chlorine.! The ions present in the solid crystals of potassium chloride dissolve and gain mobility in water
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Madam Chan is a 72 years old lady who suffered from some physical condition recently. She usually be alone in her home and cannot buy food from markets and cook them as usual due to not being able to go up and down stair which is the only method for her to go out and back home. With the reason of it‚ her home is full of tin food‚ instant food‚ preserved food as well as the left-over food. Besides diminishing of life-space due to reduced mobility‚ the nutritional problem is also one of the concern
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