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bio156 lab 2

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Question;LAB 2;Identify the functional group or molecule for each of;the following. (3 points)COOH COH COH List whether each of the following substances was;positive or negative for reducing sugar, as indicated by the Benedict's;test. (6 points)Corn syrup (1 point)Table sugar (1 point)Unknown 1 (1 point)Unknown 2 (1 point)Unknown 3 (1 point)Unknown 4 (1 point)List whether each of the following substances was;positive or negative for starch, as indicated by using iodine. (7 points)Onion juice (1 point)Water (1 point)Cornstarch (1 point)Unknown 1 (1 point)Unknown 2 (1 point)Unknown 3 (1 point)Unknown 4 (1 point)The Sudan III test has been performed for you. Please;see the image below to answer question 4a-g: Were the following substances;positive or negative for lipids, as indicated by the Sudan III test? (7;points);Click on image to enlarge.;Oil (O) (1 point)Butter (B) (1 point)Flour (F) (1 point)Unknown 1 (1 point)Unknown 2 (1 point)Unknown 3 (1 point)Unknown 4 (1 point)List whether each of the following substances was;positive or negative for protein, as indicated by the Biuret test. (7;points)Chicken soup (1 point)Water (1 point)Gelatin (1 point)Unknown 1 (1 point)Unknown 2 (1 point)Unknown 3 (1 point)Unknown 4 (1 point)Report the results from the catalase test. (3 points)LiverIs;catalase present? Yes/No (1 point);Roast beefIs;catalase present? Yes/No (1 point);Student supplied meat (provide name of meat)Is;catalase present? Yes/No (1 point);List the pH for each substance tested. (5 points)Vinegar (1 point)Shampoo (1 point)Lemon juice (1 point)Distilled water (1 point)Baking soda (1 point)What was the purpose of using water as a sample in some;of the tests performed in the lab? (2 points)Four unknown samples were included in the lab kit: flax;seed meal, potato starch, egg whites, and dried milk. Using the results of;the biochemical testing, determine which number corresponds to the correct;unknown. (8 points)Unknown 1 (2 points)Unknown 2 (2 points)Unknown 3 (2 points)Unknown 4 (2 points)State a commercial use for biochemical testing as;performed in this online laboratory. (5 points)Describe the three different types of bonds, providing;examples of compounds (or interactions) formed through each type of bond.;(3 points)What is the difference between a monosaccharide;disaccharide, and a polysaccharide? (3 points)State three factors that can affect the observance of a;particular enzyme in a test performance. (3 points)While working part-time at a lab, Matthew is asked to;grab a jar that contains carbohydrates. Two jars are on the counter, each;labeled with their chemical formula. One is labeled C5H10O5;and the other is C3H9O3. (6 points)Which one is the carbohydrate? (1 point)What should Matthew's decision be based upon? (4;points)What type of sugar is it? (1 points)Many commercial food products are sweetened with table;sugar. What is the chemical composition (technical name) of table sugar?;(2 points)Answer the following questions:How are monosaccharides made from a disaccharide? (2;points)What is this reaction called? (1 points)At home, Helena is cooking with butter and lard. While;the fats sit on the counter, she notices that the butter begins to melt;but the lard doesn't. Based on what she knows about fats, which product;most likely contains the most hydrogen atoms? Provide an explanation for;this. (5 points)Name two body structures that are composed of protein.;(2 points)(Application);How might the information gained from this lab pertaining to biological;molecules be useful to a student employed in a healthcare related;profession? (20 points)

 

Paper#63226 | Written in 18-Jul-2015

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