Which One of the Following Statements Is True of the Biosynthetic

question 19

Multiple Choice

Which one of the following statements is true of the biosynthetic pathway for purine nucleotides?

• A)CO₂ does not participate in any of the steps in this pathway.
• B)Deoxyribonucleotides are formed from 5-phosphodeoxyribosyl 1-pyrophosphate.
• C)Inosinate is the purine nucleotide that is the precursor of both adenylate and guanylate.
• D)Orotic acid is an essential precursor for purine nucleotides.
• E)The amino acid valine is one of the precursors contributing to purine nucleotides.

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