#Question id: 735
#Unit 1. Molecules and their Interaction Relevant to Biology
The a-keratin chains indicated by the diagram below have undergone one chemical step. To alter the shape of the a-keratin chains—as in hair waving—what subsequent steps are required?
#Question id: 736
#Unit 1. Molecules and their Interaction Relevant to Biology
The most important contribution to the stability of a protein’s conformation appears to be the:
#Question id: 737
#Unit 1. Molecules and their Interaction Relevant to Biology
Which structure below indicates the proper hydrogen-bonding pattern between amino acids in an α-helix? (Dashed lines represent the hydrogen bonds.)
#Question id: 738
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is correct for peptide bonds
A) C and N are shorter than typical C-N bonds.
B) C and N are longer than typical C-N bonds.
C) C and O are longer than typical C=O bonds.
D) C and O are shorter than typical C=O bonds.
#Question id: 739
#Unit 1. Molecules and their Interaction Relevant to Biology
What is true about the rotation about bonds in a protein backbone?
#Question id: 740
#Unit 1. Molecules and their Interaction Relevant to Biology
The conformation of the backbone of a polypeptide is described completely by the angle(s) of rotation about which bond(s)?