A purine or pyrimidine that is attached to a sugar,either ribose or deoxyribose,to which is attached one or more phosphate groups is called a:

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A nucleotide is composed of a nitrogenous base (purine or pyrimidine), a sugar (ribose or deoxyribose), and one or more phosphate groups. A nucleoside is similar but lacks the phosphate group(s). Nitrogenous bases are the building blocks of nucleotides, and nucleic acids are polymers made up of nucleotides.

A Purine or Pyrimidine That Is Attached to a Sugar,either