問題詳情

11. All of the following are characteristics of phenylketonuria EXCEPT:

(A) excretion of phenylpyruvate

(B) air oxidation causes urine to turn dark on standing

(C) treated by putting patient on a diet low in phenylalanine

(D) untreated patients suffer severe mental retardation

(E) deficiency or defect in phenylalanine hydroxylase.

參考答案

答案:99

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中