問題詳情
16. ________ are commonly referred to, respectively, as the 21st and 22nd amino acids.
(A) Selenocysteine and pyrrolysine
(B) Adenine and guanine
(C) Thymine and uracil
(D) Hydroxyproline and hydroxylysine
(E) β-Alanine and D-alanine
參考答案
答案：A
統計：A:7,B:0,C:0,D:0,E:0
難度：計算中