Multiple choice

-------------------- is a base found in DNA and RNA.

  1. Cysteamine

  2. Cysteine

  3. Cystine

  4. Cytosine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cytosine (C) is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2).

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