19. What following compounds is NOT required for purine biosynthesis?
(A) CO2
(B) Glutamate
(C) Aspartate
(D) N5 , N10-Methenyl tetrahydrofolate
(E) N10-Formyl tetrahydrofolate
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統計: A(16), B(68), C(3), D(32), E(15) #1629711
統計: A(16), B(68), C(3), D(32), E(15) #1629711