Answer:
A DNA molecule is a polymer, specifically being a type of polymer known as a polynucleotide. In other words, it is made up of many nucleotides. Each nucleotide is made up of three main parts: one or more phosphate (P) groups, a nitrogenous base (adenine, guanine, cytosine, or thymine), and a deoxyribose (pentose, 5-carbon) sugar. Adenine always binds/hydrogen bonds to thymine, and guanine always to cytosine. (According to Chargaff's rules, the amount of pyrimidines is always equal to that of purines.) Hope this helps! :)
