Which mineral element plays an important role in biological nitrogen fixation?

  • A
    $Mo$
  • B
    $Cu$
  • C
    $Mn$
  • D
    $Zn$

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Which specific enzyme is present in the heterocysts of blue-green algae?

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Which cofactor is essential for the activity of the nitrogenase enzyme?

How many electrons and protons are required to fix a molecule of dinitrogen $(N_2)$ (in each)?

Which of the following is a free-living,aerobic,and non-photosynthetic nitrogen-fixing bacterium?

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