• Biology
    the scientific method, a chemical test that is sensitive to these groups can be used to identify molecules that are in that class. Testing involves many procedures that are very precise. This lab is broken down into five different sections; we will be using the Biuret Test for amino groups...
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  • Re: Bio
    Honors Biology | Identifying Organic Compounds | A Lab Write-Up | | | 9/23/2011 | During the food lab performed on September 14th and 15th, students were given indicators and told to identify organic compounds in selected substances. | Identifying Organic Compounds Purpose: The...
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  • What am I eating anyway?
    through entire lab. Biuret solution can burn skin. If it comes in contact with skin or clothing, rinse thoroughly with water. Hot plates and boiling water can cause burns. Handle the test tube clamp carefully to avoid dropping the test tube or splashing the water. Procedure: 1. Collect group’s...
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  • Identifying Organic Compounds Lab
    either contaminated or it was not actually distilled. The observations in this investigation could help us decide whether or not a substance is safe for a diabetic to eat by testing it. If it tests positive for glucose or starch, it is a carbohydrate and should be avoided. Biuret solution changes color...
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  • Lab on Deck
    Abstract: Throughout this lab, nutrient testing for lipids, carbohydrates, and proteins will take place using indicators. Introduction: The most common organic compounds in organisms are lipids, carbohydrates, proteins, and nucleic acids. Certain things called indicators, or substances that...
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  • Identification of Macromolecules
    . Iodine causes complex carbohydrates to turn dark blue or black. Sudan III will dissolve in lipids and stain them red. Last, Biuret Reagent changes color from blue to violet in the presence of protein. Post Lab 1. What could you do to gain indication of whether or not you have diabetes...
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  • U76Ity
    Food Lab Report Purpose: Test for presence of starch, protein, glucose or vitamin C in our chosen food sample. I accomplished this task by following various procedures which gave me a result to see if my test was negative or positive. Hypothesis: Test for Starch: Tested raisin bread: before...
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  • Spit Lab
    materials that contained a protein by using biuret solution. The procedure for the Spit lab was to perform the starch test and reducing sugar test on both crackers. Then chew up the cracker that doesn’t have reducing sugars. Next, test the sample for a reducing sugar. The results of the Chemical Aspects...
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  • Private Laboratories That Test Food
    Title: Food Testing Lab Purpose: to determine the presence/absence of carbohydrates, lipids, and proteins in food. Materials: Iodine-Potassium Iodine solution (starch test) Benedict’s solution (monosaccharide test) Biuret solution (protein test) Brown paper (lipid test) Starch solution...
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  • Identification of Macromolecules- Lab Report
    match the results of other groups when compared during lab. This experiment gave an understanding of the different types of colour change reaction that occurred when each solution reacted with the testing solutions. Also, with the aid of the results from the sample solutions, one is able to compare and...
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  • biology
    foods are meat, beans, and nuts. The purpose of this lab is to determine the presence of specific nutrients (carbohydrates, fats, and proteins) in food products which come from plants. The foods you will be testing are corn syrup, ripe bananas, sweet potatoes, white potatoes, white bread...
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  • Organic Molecules
    . Analysis and Post Lab Questions 1. If an aldehyde group is involved in the reaction between two monosaccharide groups to from a disaccharide, then the disaccharide group will not react with Benedict’s reagent. 2. The biuret reagent is selective. Therefore it will only react with...
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  • Experimenting with Biological Macromolecules in Various Identification Tests
    testing methods, the Iodine Test, Benedict’s Test and the Biuret Test, distilled water acted as the negative control and helped prove which sample solutions were indeed positive or negative. The Iodine Test for starch and glycogen was the first testing method used in this experiment. Iodine...
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  • Detection of Biological Molecules
    starch, the Sudan III test for fatty acids, and the Biuret test for amino groups present in proteins. The last part of this lab takes an unknown substance and by the four tests, determine what the substance is. BENEDICT'S TEST Introduction: Monosaccharides and disaccharides can be detected because of...
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  • Identifying Organic Compounds Lab
    . 8. Record data 9. Wash test tubes thoroughly PART C: TESTING FOR PROTEINS 1. Put 5 ml of the appropriate substance in each labeled test tube. Add 5 drops of Biuret reagent to each test tube. CAUTION: BIURET REAGENT CONTAINS SODIUM HYDROXIDE, A STRONG BASE. IF YOU AR SPLASHED WITH THE...
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  • Lab 2
    Lab 2: Protiens and Starches Purpose: An introduction to testing procedures for two large, organic molecules: proteins and starches. Hypothesis: In the test for protiens the water, being that it is inorganic will not test positive for protiens; it will serve as the negative control...
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  • World History
    observed and recorded in my lab notes. Then I added 3 mL of the Biuret Solution to each test tube. Again, I observed and recorded the color changes. The presence of proteins (purple color solution) was found when the Biurets solution was added to the egg mixture but when the acid was added...
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  • Biology Lab 3
     Mississippi Valley State University Department of Natural Sciences and Environmental Health Joseph M Wahome PhD BI 111 General biology lab 5; Properties of Solutions and Test of Biological Molecules Summary Water is a universal solvent making up between 65% and 85% of living cells. Many...
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  • Essay
    FOOD LAB Title Food Lab Abstract The aim of this report is to see if the any of the four food apple sauce, carrot juice, cracker juice, and turkey juice contain protein, starch, or sugar. Between these four foods two are positive for sugar which are apple sauce and carrot juice. Sugar is an...
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  • Group Lab Report
    Tests Biuret Test Water (Control) Casein Gluten The suspension The protein blue/violet color. produced a blue/violet suspension produced color. a blue color. There is no change in The suspension The protein color. produced a smoky suspension turned...
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