If the side groups of a polymer occur randomly on either side of the polymer backbone, then the polymer is called ________.

A) atactic
B) syndiotactic
C) isotactic
D) enantiotactic
E) randiotactic

In ¹H NMR protons on the α-carbon of amines typically appear in the range of ________.

A) 1.0 and 2.0 ppm
B) 2.0 and 3.0 ppm
C) 3.0 and 4.0 ppm
D) 6.0 and 7.0 ppm
E) 9.0 and 10.0 ppm

An amino acid analyzer can be used to determine ________.

A) the sequence of amino acids in a peptide
B) the identity of the amino acids present in a peptide
C) the relative amounts of the amino acids present in a peptide
D) both A and C
E) both B and C