What is the meaning of $DNAs$ and $DNAase$?

Which type of nitrogenous bases are found in the loops of $t-RNA$?

Telomerase is an enzyme which is a

Watson and Crick are known for their discovery that $DNA$

In an experiment,$DNA$ is treated with a compound that intercalates between the stacks of nitrogenous base pairs. As a result,the distance between two consecutive base pairs increases from $0.34 \, nm$ to $0.44 \, nm$. Calculate the length of the $DNA$ double helix (which has $2 \times 10^9 \, bp$) in the presence of a saturating amount of this compound. (in $m$)

State the physical structure of $DNA$.