34. The 21st and 22nd amino acids are _______ and ______? (A) serine and phosphoserine (B) proline a
問題詳情
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.