32.Which amino acid is shown? O: 2 ⊙ OH B)Glycine C)Tyrosine D)Lysine E)Arginine 33.Which of the following amino acids contains an aromatic ring? A)Alanine B)Serine C)Tyrosine D)Asparagine E)Glycine Ans:C B)og is the 44cp106目70 Ans:B 35.Amino acids are covalently bonded to each other through A)hydrogen bonding D)a and B folds B)disulfide bridges E)none of the above C) peptide bonds Ans:C 36.How many polypeptides would be present if the following was treated with trypsin? CysGlyGluArgGlyPhePheTyrThrProLysAlaLeuTyr A)1B)2C)3D)4E)5 Ans:C 37.Folding of polypeptides influenced by distant residues is an example of what protein structure B)Secondary C)Tertiary D)Quaternary E)none Ans:C Page 10 Page 10 32. Which amino acid is shown? CO2H H2N H CH2 OH A) Alanine B) Glycine C) Tyrosine D) Lysine E) Arginine Ans: C 33. Which of the following amino acids contains an aromatic ring? A) Alanine B) Serine C) Tyrosine D) Asparagine E) Glycine Ans: C 34. Given that the pKa of the acidic form of proline is 2.0, and the pKa of the basic form of proline is 10.6, what is the isoelectric point? A) 2.0 B) 6.3 C) 4.4 D) 10.6 E) 7.0 Ans: B 35. Amino acids are covalently bonded to each other through_______. A) hydrogen bonding D) α and β folds B) disulfide bridges E) none of the above C) peptide bonds Ans: C 36. How many polypeptides would be present if the following was treated with trypsin? CysGlyGluArgGlyPhePheTyrThrProLysAlaLeuTyr A) 1 B) 2 C) 3 D) 4 E) 5 Ans: C 37. Folding of polypeptides influenced by distant residues is an example of what protein structure? A) Primary B) Secondary C) Tertiary D) Quaternary E) none of the above Ans: C