問題詳情

27. Which of the following is a correct statement about nitrogen fixation in root nodules?
(A) The plant contributes the nitrogenase enzyme.
(B) The process is relatively inexpensive in terms of ATP costs.
(C) Leghemoglobin helps maintain a low O2 concentration within the nodule.
(D) The bacteria of the nodule are autotrophic.

參考答案

答案:C
難度:適中0.647059
統計:A(2),B(2),C(22),D(3),E(0)

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