An example of a natural biopolymer is........

Which of the following is the correct abbreviation for deoxyriboadenosine monophosphate?

Uracil is a base present in $RNA$ with the following structure. The percentage of $N$ in uracil is $............$.
Given:
Molar mass $N = 14 \, g \, mol^{-1} ; O = 16 \, g \, mol^{-1} ; C = 12 \, g \, mol^{-1} ; H = 1 \, g \, mol^{-1}$.

Identify the carbon atom numbered from $C_1^{\prime}$ to $C_5^{\prime}$ of the monosaccharide unit of a $DNA$ nucleotide that lacks an oxygen atom from the $-OH$ group.

Which one is a purine base?

Chargaff's rule states that in an organism