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Practice problem

Nucleic Acids — Overview & Importance in Biology

By Jasper Brown
A diagram of uracil. A 6-membered ring with a secondary amine sandwiched between two ketones. The ketones are on the 2 and 4 positions of the ring.

Uracil

Adenine, thymine, guanine, and cytosine are the four nucleotides used in DNA. RNA uses three of these nucleotides, but swaps one of them for uracil, shown above. Based on the structures of the 5 nucleotides, which one is swapped for uracil?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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