阿摩線上測驗
34. The 21st and 22nd amino acids are _______ and ______?
(A) serine and phosphoserine
(B) proline and 4-hydroxylproline
(C)a-alanine and B-alanine
(D) D-alanine and L-alanine
(E) selenocysteine and pyrrolysine.
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統計： A(0), B(0), C(0), D(0), E(6) #3187945
統計： A(0), B(0), C(0), D(0), E(6) #3187945
