Which of the following nucleotide bases is found only in RNA?

A) guanine
B) adenine
C) thymine
D) uracil
E) cytosine

Uracil

A nitrogenous base found in RNA that pairs with adenine during RNA synthesis.

Nucleotide Bases

The building blocks of DNA and RNA molecules, consisting of adenine (A), cytosine (C), guanine (G), thymine (T), and uracil (U, in RNA).

RNA

Ribonucleic acid, a molecule essential for various biological roles, including coding, decoding, regulation, and expression of genes.