BMB401 F03 T1 KEY - I(Name have neither received nor given...

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I, (Name) _________________________________________ have neither received nor given help BMB 401/506 – Fall 2003 First Examination September 23, 2003 KEY During this exam you should not be in possession of a beeper or a cellular phone. Please place your beeper or cellular phone in your book bag (after you turn it off!!) and place the bag against the wall of the room. You can only use calculators that do not have memory capabilities for alphabetic characters. Other calculators should also be placed in your bag. THESE ARE STANDARD SINGLE ANSWER MULTIPLE CHOICE QUESTIONS. THE POSSIBLE ANSWERS ARE LABELED A, B, C, D AND E. SELECT THE SINGLE BEST ANSWER AND MARK THE APPROPRIATE CIRCLE ON THE SCANTRON ANSWER SHEET. Bubble in your name and ID# (C# please). There are 45 questions. You will receive full credit for 42 correct answers. 1. Hydrophobic interactions can best be characterized as: A. Interactions between opposite charges B. Interactions between water molecules ions in solution C. Interactions between polar groups and water D. Interactions between nonpolar and polar groups E. Interactions between nonpolar groups 2. Which of the following is true regarding protein structures? A. They are highly stable and rigid B. They are disrupted by denaturants such as urea and sodium dodecylsulfate C. They never contain non-polypeptide components D. Most peptide bonds have a cis configuration 3. The separation of proteins by sodium dodecylsulfate polyacrylamide gel electrophoresis is based upon differences in: 4. A protein of molecular weight 110,000 daltons would contain approximately: 5. Quaternary structure of a protein is defined as: 6. Which of the following is the most important determinant of tertiary structure? A. H-bonding B. Hydrophobic interactions C. Van der Waals interactions D. Disulfide bond formation E. Electrostatic interactions
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