Life depends on the use of gases from the atmosphere. Among these is nitrogen (N

Question

Life depends on the use of gases from the atmosphere. Among these is nitrogen (N2). What is true about the incorporation of nitrogen, from N2, into organic molecules?

A. The "fixation" of nitrogen, biologically, is a reduction of nitrogen gas, forming ammonia.

B. Nitrogen fixation is carried out by certain bacteria living in symbiosis with plants, in the roots.

C. "Assimilation" of nitrogen is done by the synthesis of Glu from ammonia and alpha-ketoglutarate and by the synthesis of Gln from Glu and ammonia.

D. The synthesis of all amino acids ultimately depends on the fixation of nitrogen and the assimilation of nitrogen.

E. All of the above are true.

Explanation / Answer

E. All of the above are true.

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