$tRNA$ is composed of about how many nucleotides?

What is formed by the combination of a deoxyribonucleoside with a phosphate group?

How many $H$-bonds are present between $G$ and $C$ in the structure of $DNA$?

$DNA$ segments that can switch their position are called:

The sugar found in polynucleotides is either $A$ or $B$. Choose the appropriate options to fill the blanks $A$ and $B$.

$A$ dinucleotide is obtained by joining two nucleotides together by a phosphodiester linkage. Between which carbons of the sugar of the nucleotides are these linkages present?