In this article we will discuss about the process of biosynthesis of nucleic acids. Biosynthesis of Nucleosides-5′-Triphosphates: Among animals, some amino acids cannot be synthesized and must therefore be supplied through diet (essential amino acids). On the contrary, purine and pyrimidine nucleotides can be synthesized “de novo”, from precursors like CO2, NH3, formiate, glycine etc., […]