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Macromolecules of LifeHands-On Labs Inc Version 42-0085-00-01Lab Report AssistantThis document is not meant to be a substitute for a formal laboratory report The Lab Report Assistant is simply a

Macromolecules of LifeHands-On Labs, Inc. Version 42-0085-00-01Lab Report AssistantThis document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.Exercise 1: Testing for ProteinsData Table 1: Biuret results.Substance Tested Predicted Results Biuret Color & Number of drops added1: Egg white 2: Pepsin 3: Sugar 4: Distilled water QuestionsA. Which of the test tubes are the positive and negative controls? B. What conclusions can be made about this experiment?C. How might Biuret reagent be used in a practical real-life situation? D. How did the predicted results compare to the actual results?Exercise 2: Testing for SugarsObservationsData Table 2: Benedict’s Reagent Results.Test Sample Predicted Results Benedict’s results#1 Glucose #2 Starch # 3 Onion juice #4 Distilled Water QuestionsA. Which of the test tubes are used as the positive and negative controls? B. How did the predicted results compare to the actual results?C. What can be concluded from this experiment?D. How might Benedict’s reagent test be used in a practical real-life situation?Exercise 3: Testing for StarchObservationsA. Write a hypothesis about whether a potato or onion has the most starch.Observations Table: Exercise 3A. View of potato under pocket microscope. Magnification =B. View of potato cells with IKI. Magnification =Observations Table: Exercise 3A. View of onion cells without IKI. Magnification =B. View of onion cells with IKI. Magnification =QuestionsA. Which vegetable has the most starch?B. What is the purpose of starch in vegetables? Hint: What is the function of stored sugar? C. How might the IKI reagent test be used in a practical real-life situation?D. Did the results differ from your hypothesis? Explain.Exercise 4: Testing for LipidsObservationsData Table 3: Lipid test results.Macromolecule BeingTested Hypothesis: containlipid or not Results from testPotato Onion Oil dH2O QuestionsA. What is the test substance?B. Which test represents the control?C. Which test contained the most test substance?D. Did the results agree with the initial hypothesis in every case? Explain why or not.Exercise 5: Making MayonnaiseConclusionsA. If you were given a piece of hot dog and a piece of carrot, using what you learned in these exercises, how would you analyze the composition of these materials?B. What classes of compounds are present in living organisms that are not tested for in this exercise?

May 13 2020 View more View Less

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