Which base is not present in the $DNA$ structure?

In the double-strand helix structure of $DNA,$ thymine forms hydrogen bonds with

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

$ADP$ and $ATP$ differ in the number of

What is the correct sequence of the complementary strand for the given portion of a DNA molecule:- $5' - G A C G T A C - 3'$?

Which carbon atom of deoxyribose sugar in $DNA$ does $NOT$ contain the $-OH$ group?