DNA does not contain any amino acids. DNA contains four different types of nucleotides: adenine (A), cytosine (C), guanine (G), and thymine (T). These nucleotides are arranged in a specific order to form genes. Genes are the units of heredity that determine the characteristics of an organism.

Proteins, on the other hand, contain amino acids. There are 20 different types of amino acids that can be found in proteins. These amino acids are linked together in a specific order to form polypeptides. Polypeptides are the building blocks of proteins.

The sequence of amino acids in a protein determines its structure and function. Proteins play a vital role in many cellular processes, including metabolism, growth, and reproduction.