Classification. The following are basic building blocks of biopolymers. Match the building blocks with the statements below. The basic unit of proteins a. Amino acid The monomers of a polypeptide chain b. Glucose The basic unit of DNA c. Carboxyl head d. Fatty acid tail The basic unit of RNA e. Nucleotide The basic unit of cellulose The basic unit of glycogen The basic unit of starch The hydrophilic component of a type of lipid The hydrophobic component of a type of lipid Which two units combine in various ways to form lipids? a. a and b b. a and c c. b and c d. b and d e. c and d.