In the Synthesis of Purine Nucleotides

Multiple Choice

In the synthesis of purine nucleotides,

A) the ring system is bonded to ribose phosphate only after the complete purine ring is assembled
B) the six-membered ring of the purine is assembled first, then the five-membered ring
C) there is no requirement for ATP
D) the ring system is synthesized onto the ribose phosphate moiety