A) type of bond between the R group and the rest of the molecule
B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups
D) the chemical properties of the amino and carboxyl groups
A) type of bond between the R group and the rest of the molecule
B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups
D) the chemical properties of the amino and carboxyl groups