<span>The structure 1 and structure 4 are found in DNA but not RNA. </span>DNA is formed from molecules named as nucleotides. Every ester contains a phosphate cluster, a sugar cluster and an atomic number 7 base. Whereas, RNA features a ribose sugar rather than a <span>deoxyribose</span> sugar like deoxyribo nucleic acid. RNA nucleotides have a U base rather than pyrimidine.