Exam 3 - BME 201 Biomolecules Fall 2010 Instructor: Gudrun...

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1 BME 201 Biomolecules Fall 2010 Instructor: Gudrun Schmidt Teaching Assistant: Marcus Kramer Key: Exam 3 Nov. 18. 2010 Room: EE 170 8.00pm- 9.30pm Name: Please place all answers in the space provided after each question. Do not write on the back side or additional paper. No other answers will be graded. No calculators and no cheat sheets allowed.
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2 1) A) Which error would cause more damage to a cell: DNA replication or DNA transcription error? Explain B)
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3 2) What is the pH of a solution prepared by mixing 150mL of 0.1 M HCl with 300 mL of 0.1 M sodium acetate (NaOAc) and diluting the mixture to 1 L? The pKa of acetic acid is 4.76. (no calculator necessary or allowed)
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4 3) It has been estimated that two high energy phosphate bonds must be expended to incorporate one glucose molecule into glycogen. A) Why is glucose stored in muscles and liver in form of glycogen and not as individual glucose molecules? Why is it advantageous for the cell to expend metabolic energy to polymerize glucose molecules?
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This note was uploaded on 01/18/2012 for the course BME 201 taught by Professor Schmidt during the Fall '11 term at Purdue.

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Exam 3 - BME 201 Biomolecules Fall 2010 Instructor: Gudrun...

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