The Basic Building Block of DNA and RNA is A(n)____

Question

The basic building block of DNA and RNA is a(n)____.
A) nitrogenous base
B) sugar-phosphate backbone
C) amino acid
D) nucleotide
E) ribose sugar

Accepted Answer

Nucleotides are the building blocks of DNA and RNA, composed of a nitrogenous base, a sugar molecule (either deoxyribose for DNA or ribose for RNA), and a phosphate group. The nitrogenous base is responsible for the genetic information stored in DNA and RNA.