quiz4[1] - Name: _ 2008 Biochemistry Quiz 4 Multiple Choice...

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Name: ______________________ 1 2008 Biochemistry Quiz 4 Multiple Choice (11 questions: front and back of page) Identify the choice that best completes the statement or answers the question. Calculators are not required and not permitted for this quiz. 2. At what substrate concentration would an enzyme with a k cat of 30.0 s -1 and a K M of 0.0050 M operate at one-half of its maximum rate? A. 0.0150 M B. 0.0100 M C. 0.0300 M D. 0.0025 M E. 0.0050 M 3. Estimate the V max for the enzyme-catalyzed reaction for which the data above were obtained. A. V max = 70 uM/min C. V max = 100 uM/min E. V max = 40 uM/min B. V max = 140 uM/min D. V max = 160 uM/min 4. Estimate the K M for the enzyme-catalyzed reaction for which the data above were obtained. A. K M = 5.0 x 10 -3 M C. K M = 2.0 x 10 -5 M E. K M = 1.0 x 10 -5 M B. K M = 5.0 x 10 -6 M D. K M = 1.0 x 10 -2 M 5. Lysozyme has two ionizable groups involved in catalysis: Glu35 with a pKa of 5.9 and Asp52 with a pKa of 4.5. The optimal pH for lysozyme activity is 5.2.
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This note was uploaded on 05/28/2008 for the course CHEM 350 taught by Professor Lee during the Spring '08 term at SIU Carbondale.

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quiz4[1] - Name: _ 2008 Biochemistry Quiz 4 Multiple Choice...

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