Which one is found in $ATP$ ribonucleotide?

In $DNA$,the complementary bases are

Which of the following statements about the assembly of nucleotides in a molecule of deoxyribose nucleic acid $(DNA)$ is correct?

Identify the nitrogenous base of nucleic acid from the following that has a double-ring structure.

The double helical structure of $DNA$ was proposed by

In nucleic acids,the sequence of the backbone components is