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36. Which of the following is true? A. All proteins possess primary, secondary, tertiary and quaternary structure B. Proline is the least common amino acid in alpha-helices due to its inability to fully participate in intrahelical hydrogen bonding C. Once denatured, proteins cannot be renatured or restored to the native state D. The subunits of oligomeric proteins are always identical 37. The pka's of the side chain group and the alpha-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference? A. The side chain has more resonance structures B. The alpha-carboxyl group has less steric hindrance and it is therefore ionized more easily C. The side chain is a different functional group than alpha-carboxyl group D. The alpha-carboxyl group is closer to the alpha-amino group than the side chain is E. None of the above

36. Which of the following is true? A. All proteins possess primary, secondary, tertiary and quaternary structure B. Proline is the least common amino acid in alpha-helices due to its inability to fully participate in intrahelical hydrogen bonding C. Once denatured, proteins cannot be renatured or restored to the native state D. The subunits of oligomeric proteins are always identical 37. The pka's of the side chain group and the alpha-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference? A. The side chain has more resonance structures B. The alpha-carboxyl group has less steric hindrance and it is therefore ionized more easily C. The side chain is a different functional group than alpha-carboxyl group D. The alpha-carboxyl group is closer to the alpha-amino group than the side chain is E. None of the above

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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### Biochemistry Quiz #### Question: Protein Structure and Amino Acid Properties **Question 36: Which of the following is true?** A. All proteins possess primary, secondary, tertiary, and quaternary structure B. Proline is the least common amino acid in alpha-helices due to its inability to fully participate in intrahelical hydrogen bonding C. Once denatured, proteins cannot be renatured or restored to the native state D. The subunits of oligomeric proteins are always identical **Question 37: The pKa’s of the side chain group and the alpha-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference?** A. The side chain has more resonance structures B. The alpha-carboxyl group has less steric hindrance and it is therefore ionized more easily C. The side chain is a different functional group than the alpha-carboxyl group D. The alpha-carboxyl group is closer to the alpha-amino group than the side chain is E. None of the above
Transcribed Image Text:### Biochemistry Quiz #### Question: Protein Structure and Amino Acid Properties **Question 36: Which of the following is true?** A. All proteins possess primary, secondary, tertiary, and quaternary structure B. Proline is the least common amino acid in alpha-helices due to its inability to fully participate in intrahelical hydrogen bonding C. Once denatured, proteins cannot be renatured or restored to the native state D. The subunits of oligomeric proteins are always identical **Question 37: The pKa’s of the side chain group and the alpha-carboxyl group of glutamate are 4.1 and 2.1, respectively. Which statement accounts for this difference?** A. The side chain has more resonance structures B. The alpha-carboxyl group has less steric hindrance and it is therefore ionized more easily C. The side chain is a different functional group than the alpha-carboxyl group D. The alpha-carboxyl group is closer to the alpha-amino group than the side chain is E. None of the above
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