Chapter 2 Protein Composition and Structure 2 6 Where are proteins with extensive disulfide links likely to be found? Ans:i Section:2.2 This amino acid residue disrupts the a helix because its side chain contains a unique ring structure that restricts bond rotations. Ans:k Section:2.1 Name of the plot that allows one to investigate the likely orientation of certain amino acid pairs. Ans:g Section:2.2 9 The type of structure to which a helices,B sheets,and turns are referred. Ans:e Section:2.3 10 The overall structure of a protein is referred to as Ans:f Section:2.4 Fill in the Blank Questions 1 The amino acid that contains a weakly acidic "phenolic"group is Ans:tyrosine Section 2.1 2 is a fibrous protein and is the primary component of wool and hair. Ans:A keratin Section 2.3 3 Every third residue in the protein collagen is Ans:glycine Section 2.3 4 Disulfide bonds in proteins can be reduced to free sulfhydryl groups by reagents such as Ans:B mecaptoethanol Section 2.6 5 A protein is considered to be when it is converted into a randomly coiled structure without its normal activity Ans:denatured Section 2.6Chapter 2 Protein Composition and Structure 2 6 ____________ Where are proteins with extensive disulfide links likely to be found? Ans: i Section: 2.2 7 ____________ This amino acid residue disrupts the α helix because its side chain contains a unique ring structure that restricts bond rotations. Ans: k Section: 2.1 8 ____________ Name of the plot that allows one to investigate the likely orientation of certain amino acid pairs. Ans: g Section: 2.2 9 ____________ The type of structure to which α helices, β sheets, and turns are referred. Ans: e Section: 2.3 10 ____________ The overall structure of a protein is referred to as Ans: f Section: 2.4 Fill in the Blank Questions 1 The amino acid that contains a weakly acidic “phenolic” group is _________________. Ans: tyrosine Section 2.1 2 _______________ is a fibrous protein and is the primary component of wool and hair. Ans: Α keratin Section 2.3 3 Every third residue in the protein collagen is ____________________. Ans: glycine Section 2.3 4 Disulfide bonds in proteins can be reduced to free sulfhydryl groups by reagents such as _____________________. Ans: β mecaptoethanol Section 2.6 5 A protein is considered to be __________________ when it is converted into a randomly coiled structure without its normal activity. Ans: denatured Section 2.6