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Identify the following amino acid at pH = 7 (aqueous form): (COO-)–CH(NH3+)–CH2–(COO-) aspartic acid asparagine histidine arginine lysine  Describe the amino acid illustrated above (at pH = 7.0). it is a non-polar, positively-charged amino acid it is a polar, positively-charged amino acid it is a polar, uncharged

Identify the following amino acid at pH = 7 (aqueous form): (COO-)–CH(NH3+)–CH2–(COO-) aspartic acid asparagine histidine arginine lysine  Describe the amino acid illustrated above (at pH = 7.0). it is a non-polar, positively-charged amino acid it is a polar, positively-charged amino acid it is a polar, uncharged

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter23: Organic Polymers, Natural And Synthetic
Section: Chapter Questions
Problem 31QAP: On complete hydrolysis, a polypeptide gives two alanine, one leucine, one methionine, one...
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Identify the following amino acid at pH = 7 (aqueous form): (COO-)–CH(NH3+)–CH2–(COO-)

  1. aspartic acid
  2. asparagine
  3. histidine
  4. arginine
  5. lysine

 Describe the amino acid illustrated above (at pH = 7.0).

  1. it is a non-polar, positively-charged amino acid
  2. it is a polar, positively-charged amino acid
  3. it is a polar, uncharged amino acid
  4. it is a polar, negatively-charged amino acid
  5. it is a non-polar, negatively-charged amino acid

How many chiral carbons are present in the above amino acid (in aqueous form)?

  1. zero chiral carbons
  2. one chiral carbon
  3. two chiral carbons
  4. three chiral carbons
  5. four chiral carbons

How many optical isomers (stereoisomers) are possible for the above amino acid (aqueous form)?

  1. 21 = 2 optical isomers
  2. 22 = 4 optical isomers
  3. 23 = 8 optical isomers
  4. 24 = 16 optical isomers
  5. 25 = 32 optical isomers

 

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