The base adenine is found in ........

Which of the following is not a type of $RNA$?

Which among the following compounds possesses the highest number of $N$ atoms in it?

The reason for the double helical structure of $DNA$ is the operation of

The two strands in $DNA$ are not identical but are complementary. Explain.

$A$ nucleic acid,whether $DNA$ or $RNA$,gives on complete hydrolysis,two purine bases,two pyrimidine bases,a pentose sugar,and phosphoric acid. Nucleotides,which are intermediate products in the hydrolysis,contain: