20. What enzyme is it that mediates nitrogen entry into higher organisms?
(A)Glutamine synthetase
(B)Glutamate-pyruvate transaminase
(C)Carbamoyl phosphate synthetase I
(D)Arginase
(E)N-acetylglutamate synthase
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統計: A(0), B(0), C(0), D(0), E(1) #3392795
統計: A(0), B(0), C(0), D(0), E(1) #3392795