In the case of DNA and RNA, these monomers are nucleotides. Nucleotides themselves are composed of three distinct parts: sugar, phosphate, and a nitrogenous base. Here's what each of those really ...

The basic units (monomers) of DNA are nucleotides. These nucleotides consist of a deoxyribose sugar, phosphate and base. The nucleotides are identical except for the base, which can be an adenine ...