Ms.Sastry/AP Bio Unit 1/Chp 5 lab 1 Macromolecule Lab Write Up: Introduction: (all your prelab answers!) – type it up and get the flow going – that means organize into paragraphs and don’t answer as a series of questions – make it sound like an Introduction! 1) What are macromolecules? 2) What are the 4 types (mmm you know this in your sleep correct?) of macromolecules? What are the main functions of these macromolecules in the cell? – new question! 3) Give the monomer and polymer names for each type. 4) What are the reactions that make polymers/macromolecules called? 5) When are these reactions used in the body? 6) What is the purpose of this lab? 7) What are the 4 tests that we shall use in this lab to test for macromolecules and what specific macromolecules (not your food!) are expected to give positive results for each (read this handout and figure it out)? How is this lab setup: with that goal in mind – explain the following in a paragraph- 8) Is this a qualitative or quantitative lab in terms of the results collected? 9) What is the difference between a positive and a negative control? 10) Why are the positive/negative controls used in this lab? Results: Type your results in a clean data table. Discussion: 1) Summarize your results in words. What were the major macromolecules in the 4 unknowns? 2) Were your results at the max. possible ‘+’ value for all positive controls ? Were your negative controls truly ‘negative’? If not, how does it impact your lab results? 3) Research your 5 foods/controls on the internet for the macromolecules that are actually present in it (include references!). Was your result from the lab in agreement with the internet research? Why, why not? 4) Analyze sources of errors for the lab and suggest changes for the future.
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