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

The double helical structure of $DNA$ was proposed by

In the sugar that differentiates $RNA$ from $DNA$,the presence or absence of the $-OH$ group occurs at which carbon atom?

Write the important structural and functional differences between $DNA$ and $RNA$.

If one strand of a $DNA$ has the sequence $ATGCTTCA$,the sequence of the bases in the complementary strand is:

What is the unit of base-sugar-phosphate in nucleic acids called?