24-1 Nucleotides and Nucleic Acids Nucleic acids are biopolymers -Composed of nucleotides which are joined together to form a long chain ·Nucleotide Composed of nucleosides bound to a phosphate group Nucleoside Composed of an aldopentose sugar linked through its anomeric carbon to the nitrogen atom of a heterocyclic purine or pyrimidine base DNA H20 Nuclease Base 0 Base Base O-POCH2 HOCH2 Nucleotidase Nucleosidase HOCH2 OHOH(or H) OHOH (or H) Nucleotides Nucleosides 0P032 OHOH(or H) Nucleic acids are biopolymers ▪ Composed of nucleotides which are joined together to form a long chain ▪ Nucleotide ▪ Composed of nucleosides bound to a phosphate group ▪ Nucleoside ▪ Composed of an aldopentose sugar linked through its anomeric carbon to the nitrogen atom of a heterocyclic purine or pyrimidine base 24-1 Nucleotides and Nucleic Acids