問題詳情
79. The human genetic disease phenylketonuria can result from _____.
① a defect in phenylalanine hydroxylase
② a defect in homogentisate dioxygenase
③ inability to convert phenylalanine to tyrosine
④ urine containing excessive phenylpyruvate
⑤ deficiency of phenylalanine in the diet
(A) ①②③
(B) ①③④
(C) ①②⑤
(D) ②③④
(E) ①③⑤
參考答案
答案：B
統計：A:0,B:1,C:0,D:0,E:0
難度：計算中