Draw the covalent bond the Lewis structure and the chemical formula for oxygen (o) and oxygen (o)

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

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic