Which Best Describes the Synthesis of Purine Nucleotides

question 39

Multiple Choice

Which best describes the synthesis of purine nucleotides?

• A) The basic ring structure, inosine, is synthesized first and then linked to ribose. This is then modified to produce either GMP or AMP.
• B) The basic ring structure, orotate, is synthesized stepwise on ribose. This is then modified to produce either GMP or AMP.
• C) The basic ring structure, inosine, is synthesized stepwise on ribose. This is then modified to produce either GMP or AMP.
• D) The basic ring structure, orotate, is synthesized first and then linked to ribose. This is then modified to produce either UMP or CMP.

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