阿摩線上測驗
19. Which of the following biological molecules is NOT derived from tyrosine?
(A) melanin
(B) serotonin
(C) dopamine
(D) epinephrine
(E) norepinephrine
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統計： A(7), B(63), C(4), D(2), E(1) #3101680
統計： A(7), B(63), C(4), D(2), E(1) #3101680
