A ribose sugar is added to ________ rings after their synthesis and to ________ rings during their synthesis.

Question

Quizplus · Accepted Answer

Ribose sugar is added to pyrimidine rings during their synthesis, and to purine rings after their synthesis. This is because purine synthesis occurs via a complex pathway where the purine ring is built up from smaller precursors, whereas pyrimidines are synthesized from simple precursors and the ribose sugar is added during the process.

A Ribose Sugar Is Added to ________ Rings After Their