Which nitrogen atom of a purine base is bonded with the furanose sugar to form a nucleoside?

Both human $DNA$ and $RNA$ are chiral molecules. The chirality in $DNA$ and $RNA$ arises due to the presence of

Which of the following is not a protein?

Which of the following pyrimidine base is present in $RNA$?

The sequence in nucleic acids is .......

For a double strand $DNA$,one strand is given below:
$5'-A-G-T-C-A-C-G-T-A-A-G-T-C-3'$
The amount of energy required to split the double strand $DNA$ into two single strands is $.... \ kcal \ mol^{-1}$.
[Given: Average energy per $H$-bond for $A-T$ base pair $= 1.0 \ kcal \ mol^{-1}$,$G-C$ base pair $= 1.5 \ kcal \ mol^{-1}$. Ignore electrostatic repulsion between the phosphate groups.]