Name one non-symbiotic nitrogen-fixing prokaryote.

  • A
    Azotobacter
  • B
    Rhizobium
  • C
    Frankia
  • D
    Anabaena

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Explain the process/mechanism of biological nitrogen fixation.

Which of the following is responsible for atmospheric nitrogen fixation?

Which of the following is a free-living nitrogen-fixing bacterium?

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

Which of the following does not help in ${N_2}$ fixation?

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