20. Glutamine, arginine, and proline:
(A) do not have a common precursor.
(B)may all be derived from a citric acid cycle intermediate.
(C) may all be derived from a Cori cycle intermediate.
(D) may all be derived from a glycolytic intermediate.
(E) may all be derived from a urea cycle intermediate.
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統計: A(0), B(1), C(1), D(1), E(0) #3506970
統計: A(0), B(1), C(1), D(1), E(0) #3506970