Which cycle(s) are important for the construction of DNA, RNA and proteins? Nitrogen Cycle
Carbon Cycle
Phosphorus Cycle
Water Cycle

Water cycling is extremely important to ecosystem dynamics.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

not sure if this is what you'r looking for eubacteria and archaebacteria