Q3AAnswerKey

Q3AAnswerKey - CHEM 153L Q UIZ 3 F ORM A Thursday, July 15,...

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CHEM 153L QUIZ 3 FORM A Thursday, July 15, 2010 NAME: ____ANSWER KEY_______ SECTION: ____________ TA use only: Page totals = P1. _______ P2 ________ P3 _________ = ___________ General Instructions: 1. Answers written in with pencil or erasable pen may forfeit any possible regrades. 2. If you have finished early, place your quiz face down and wait till time is called. Do not leave your seat until the quiz is done. 3. Unless specified, multiple-choice questions may have more than 1 correct answer. Circle all that apply. If you select the wrong choice, you will be deducted points – so avoid guessing. READ EACH SELECTION CAREFULLY. 4. It is preferred that you limit your answers to the space provided unless instructed otherwise. If you need to go over, do not exceed more than a sentence. 5. Gauge your time. The quiz is 30 minutes.
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1. You just completed your 2 nd ammonium sulfate precipitation step and obtained a 40 ml supernatant and two equally distributed pellets. The 2 nd step supernatant was assayed with a dilution factor that was ¼ the dilution factor of the 1 st ammonium sulfate supernatant (also 40 ml) used for the enzyme assay which yielded the same slope as the 1 st step assay. If you resuspend one of the 2 nd step pellets in 4 ml, then what would be the fold difference between the dilution factors of the 1 st ammonium sulfate step to the resuspended single 2 nd step pellet. Show all work.
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This note was uploaded on 10/07/2010 for the course POLI SCI 40 taught by Professor Sch during the Spring '10 term at UCLA.

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Q3AAnswerKey - CHEM 153L Q UIZ 3 F ORM A Thursday, July 15,...

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