Organic Compounds Lab Report Essay - 703 Words

Identifying Organic Compounds Joe Harris 11/12/07 1. Background Organic compounds are, by definition, any chemical compound containing carbon. These compounds include carbohydrates, polysaccharides, lipids, proteins, and nucleic acids. Each one of these compounds has a different purpose. Carbohydrates give energy to cells when consumed. Lipids are basically the fats of a cell. Proteins are the building blocks of muscle in a cell. Nucleic acids are used to transfer genetic information from one cell to the other. The purpose of this lab is to simply determine the absence or presence of the main†¦show more content†¦7.When water bath is ready, put each test tube into the water bath. Wait 5 minutes. 8.After 5 minutes, remove test tubes from the water bath set in test tube holder and record results. Also turn off hot plate. 9.Clean both test tubes thoroughly. 10. Repeat steps 2 and 3. 11.Add 10 drops of Lugols solution to each test tube. 12.Swirl to mix. 13.Record data. 14.Clean both test tubes thoroughly. 15.Repeat steps 2 and 3. 16.Add 10 drops of Biuret solution to each test tube. 17.Swirl to mix. 18.Wait 1-2 minutes. 19.Record data. 3. Data and Results A. Data Tables Benedicts Test Test Tube Original Color Final Color Tube Contains + or - A Light Blue Orange Sugar + B Light Blue Light Blue Still Unknown - Lugols Test Test Tube Original Color Final Color Tube Contains + or - A Clear Yellow Still Unknown - B Clear Dark Purple Starch + Biuret Test Test Tube Original Color Final Color Tube Contains + or - A Clear Light Purple Protein + B Clear Clear Clear - 4. Conclusion During the Benedicts test, the contents of tube B did not change, indicating the absence of sugar in that particular substance. However, the contents of tube A did change orange indicating the presence of sugar in that substance. 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