A major component of RNA, but not DNA is UMP. Which nucleotide monophosphate is a major component of RNA but not DNA?

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Study for the Biochemistry Module 6 Exam. Study with flashcards and multiple choice questions; each question includes hints and explanations. Gear up to ace your test!

Multiple Choice

A major component of RNA, but not DNA is UMP. Which nucleotide monophosphate is a major component of RNA but not DNA?

Explanation:
RNA uses ribose and contains uracil instead of thymine. Nucleotide monophosphates reflect those bases: AMP, CMP, and GMP are found in both RNA and DNA (with deoxy forms in DNA), but uracil is unique to RNA. That makes uridine monophosphate (UMP) a major RNA component that isn’t used in DNA, which relies on thymidine monophosphate instead. In short, the presence of uracil with ribose ties UMP specifically to RNA.

RNA uses ribose and contains uracil instead of thymine. Nucleotide monophosphates reflect those bases: AMP, CMP, and GMP are found in both RNA and DNA (with deoxy forms in DNA), but uracil is unique to RNA. That makes uridine monophosphate (UMP) a major RNA component that isn’t used in DNA, which relies on thymidine monophosphate instead. In short, the presence of uracil with ribose ties UMP specifically to RNA.

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