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Question

(B) Biological nitrogen fixation is catalyzed by the enzyme nitrogenase. The overall equation for the reduction of $N_2$ to $NH_3$ is: $N_2 + 8e^- + 8

Vedclass · Accepted Answer

$8$ molecules of $ATP$ are consumed.

Vedclass · Answer

(B) Biological nitrogen fixation is catalyzed by the enzyme nitrogenase. The overall equation for the reduction of $N_2$ to $NH_3$ is: $N_2 + 8e^- + 8H^+ + 16ATP \rightarrow 2NH_3 + H_2 + 16ADP + 16\Pi$. According to this equation,the reduction of $1$ molecule of $N_2$ requires $16$ molecules of $ATP$ to produce $2$ molecules of $NH_3$. Therefore,for the fixation of $1$ molecule of $NH_3$,$8$ molecules of $ATP$ are consumed.

Select the correct option for the fixation of $1$ molecule of ammonia.

Similar Questions

Choose the incorrect pair$(s)$:
$(I)$ Free-living nitrogen-fixing aerobic microbes - Beijerinckia
$(II)$ Rhodospirillum - Aerobic microbes
$(III)$ Bacillus - Free-living
$(IV)$ Cyanobacteria - Anabaena and Azotobacter

Identify the odd one out in the context of nutrition.

The free-living anaerobic nitrogen-fixing bacterium is . . . . . . .

How many $ATP$ are required for the formation of one molecule of $NH_3$ by the nitrogenase enzyme?

Identify the process represented by the following reaction:
$N_2 + 8e^- + 8H^+ + 16ATP \rightarrow 2NH_3 + H_2 + 16ADP + 16P_i$

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