Which purine base is found in RNA?
Correct answer: D. Guanine
- A. Thymine
- B. Uracil
- C. Cytosine
- D. Guanine
Explanation
The bases are of two types: purines and pyrimidines. The purine derivatives adenine (A) and guanine (G) are double ring structures whereas pyrimidine derivatives thymine, cytosine, and uracil are single ring structures. Thymine (T) and cytosine (C) are found in DNA and cytosine (C) and uracil (U) is found in RNA. Pneumonic for remembering purines: Pure As Gold.
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