Telomerase is an enzyme which is a

Which of the following is known as soluble $RNA$ $(sRNA)$?

In the given polynucleotide chain,which of $P, Q, R,$ and $S$ are purine nitrogenous bases?

Which of the following nitrogen bases is found only in $DNA$?

In $DNA$,the unequal nitrogenous bases will primarily be ...

Read the following statements and choose the set of correct statements:
$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octamer is wrapped by negatively charged $DNA$ in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ $A$ typical nucleosome contains $400 \ bp$ of $DNA$ helix
Choose the correct answer from the options given below: