問題詳情
32. What is the advantage of excreting nitrogenous waste in the form of ammonia?
(A) Ammonia is less toxic than uric acid.
(B) Ammonia is less soluble than uric acid.
(C) Ammonia excretion conserves energy.
(D) Ammonia does not diffuse across cell membranes.
(E) Ammonia excretion expends energy.
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
用户評論
【蘋果派】評論
含氮廢物的排出形式中，胺(ammonia)的毒性最強、排除所需能量最低，常見的例子有硬骨魚、兩生類幼體等；而尿酸(uric acid)的毒性最弱、合成所需的能量最高、排除所需水量最少，常見的例子有鳥類、爬蟲類等