I will be focusing on one aspect of Biochemistry, proteins. Proteins make up about everything in your body. Your hair, muscles, and skin are all made from the stuff. Proteins in turn are all made up from only 20 different amino acids. Every kind of species, from the smallest bacteria to the huge blue whale are made up from the same material.
Chemists usually refer to proteins as polypeptides.
Proteins are large polypeptides formed by the condensation of 50 or more amino acids. It is expressed by using a three-letter abbreviation for each of the amino acids.