問題詳情
17. Urea contains one carbon, two nitrogens, one oxygen and 4 hydrogens. Where are
the sources of the carbone and nitrogens?
(A) carbamoyl phosphate and ornithine,
(B) bicarbonate and aspartate,
(C) carbamoyl phosphate and bicarbonate and ornithine,
(D) aspartate,
(E) None of the above.
參考答案
答案：99
統計：A:0,B:0,C:0,D:1,E:0
難度：計算中