Which of the Following Is the Limiting Substance in the Biosynthesis

question 7

Multiple Choice

Which of the following is the limiting substance in the biosynthesis of purines?

• A)ribose-5-phosphate
• B)5-phosphoribosyl-b-amine
• C)formylglycinamidine ribonucleotide
• D)5-phosphoribosyl-a-pyrophosphate (PRPP)

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