The double-helical structure of $DNA$ is due to ....

In a nucleoside,the base is attached to which position of the sugar molecule?

Hydrolysis of which of the following nucleic acids does not give an equal number of $A$ and $T$ or $G$ and $C$?
$(A)$ $m$-$RNA$
$(B)$ Single strand $DNA$
$(C)$ $r$-$RNA$
$(D)$ Double helix $DNA$

Which base is present in $RNA$ but not in $DNA$?

$RNA$ and $DNA$ are chiral molecules. Their chirality is due to the presence of:

Write a note on the chemical composition of nucleic acids.