Which Component of Amino Acids Accounts for the Differences in Their

Question

Which component of amino acids accounts for the differences in their properties?
A) the amino group
B) the carboxyl group
C) the side group
D) the type of bonds

Accepted Answer

The side group (also known as the R-group or side chain) is unique to each amino acid and accounts for their differing chemical and physical properties. The amino and carboxyl groups are present in all amino acids and are involved in peptide bond formation. The type of bonds (such as peptide or disulfide bonds) also contribute to the properties of proteins, but this is not specific to individual amino acids.