問題詳情

4. Microorganisms play important roles in carbon and nitrogen cycle. Please choosea correct one from the followings.
(A) Nitrifying bacteria can reduce atmospheric molecular nitrogen (N2) into nitrite.
(B) The anammox reaction is an aerobic reaction, in which ammonium ion

is used as the terminal electron acceptor.
(C) In carbon cycle, all fixed carbon can be oxidized back to CO2 again only byanaerobic respiration, but not by fermentation.
(D) In the second step of nitrification, bacteria convert ammonium ion 

  intonitrite

.
(E) Microorganisms can facilitate carbon fixation in anoxic environments bychemolithoautotrophy in the absence of light.

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增