問題詳情
30 Epinephrine 的生合成，由Tyrosine 為起始物，經Dopa 及Dopamine 而成，其結構（右圖）中的甲基 （-CH 3）來自： 
(A)Alanine
(B)Leucine
(C)Methionine
(D)Phenylalanine
(A)Alanine
(B)Leucine
(C)Methionine
(D)Phenylalanine
參考答案
答案：C
難度：適中0.440678
統計：A(8),B(2),C(26),D(12),E(0)
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