DNA Structure Notes DNA molecule 2 strands of DNA are bound to each other by ______________ 1 molecule is made of _________ of DNA Gene ___________ ___________ ________ 4 Nitrogenous Bases DNA molecule has a shape known as _____________ Pyrimidines Nucleotide Purines Bind s Bind s Remember: A nucleotide is made of 3 parts and it contains CHONP Ex: Write the base pair