問題詳情
50. Which description is NOT correct about the nitrogen excretion?
(A) Ammonia is highly toxic to animal tissues.
(B) In the urea cycle, ornithine combines with ammonia and regenerate in eachturn of the cycle.
(C) The urea cycle results in a net conversion of fumarate to oxaloacetate.
(D) Both of fumarate and oxaloacetate are intermediates in the TCA cycle.
參考答案