【已刪除】79. The de novo purine nucleotide synthesis relies upon the conversion of _______ to _______as a primary source of one
carbon unit.
(A) alanine; pyruvate
(B) phenylalanine; tyrosine
(C) serine; glycine
(D) glutamate; α-ketoglutarate
(E) aspartate; oxaloacetate
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