bisc330.mt2.sample

bisc330.mt2.sample - BIOLOGICAL SCIENCES 330L Midterm Exam...

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BIOLOGICAL SCIENCES 330L Midterm Exam 2 Sample (50-minute exam) Prof. John Petruska This exam (worth 175 points) is on five (5) pages Please answer all questions in the space provided. Please write your name and lab information below and also write your name on every page of the exam. Last Name _______________________________,First Name ________________ Lab Section (time and day)__________________________ TAs _______________ SCORE 1. (38) ________ 2. (32) ________ 3. (45) ________ 4. (30) ________ 5. (30) ________ TOTAL (175) __________
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Page 1 Last Name ______________________ First Name ______________ 1. (38 points) Fill in each blank with correct answer (2 pts/blank, unless otherwise stated) (a) Given that the amino acid Alanine has pK a values of 2.3 ( α -carboxy) and 9.9 ( α -amino), estimate its net charge at each of the following pH values (1 pt/blank): pH 1 ______ pH 2.3 ______ pH 6.1 ______ pH 9.9 _______ (show work) (b) Calculate pH for each of the following : 0.1 mM HCl _____
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This note was uploaded on 05/03/2010 for the course BISC 330L taught by Professor Petruska,tower during the Spring '07 term at USC.

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bisc330.mt2.sample - BIOLOGICAL SCIENCES 330L Midterm Exam...

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