Nitrogen Fixation and Nitrification Quiz

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Questions and Answers

Which process returns nitrogen to the atmosphere, completing the nitrogen cycle?

  • Denitrification (correct)
  • Nitrogen fixation
  • Assimilation
  • Nitrification

What is the importance of ammonification in the nitrogen cycle?

  • It converts ammonia into nitrite and then into nitrate, which plants can readily take up from the soil.
  • It incorporates nitrogen into biological tissues, essential for the growth and development of living organisms.
  • It provides plants with a form of nitrogen they can absorb and use for growth.
  • It returns nitrogen to the soil, making it available for reuse. (correct)

Which process involves the conversion of atmospheric nitrogen into ammonia or other compounds by nitrogen-fixing bacteria or through industrial processes?

  • Ammonification
  • Assimilation
  • Nitrification
  • Nitrogen fixation (correct)

What is the role of nitrifying bacteria in the nitrogen cycle?

<p>To convert ammonia into nitrite and then into nitrate, which plants can readily take up from the soil. (D)</p> Signup and view all the answers

Which process involves the incorporation of nitrogen into biological tissues, such as proteins and nucleic acids, by plants and other organisms?

<p>Assimilation (B)</p> Signup and view all the answers

What is the importance of nitrification in the nitrogen cycle?

<p>Converts ammonia into nitrite and then into nitrate (B)</p> Signup and view all the answers

What is the role of denitrifying bacteria in the nitrogen cycle?

<p>Converts nitrates into nitrogen gas or nitrous oxide (C)</p> Signup and view all the answers

What is the definition of ammonification in the nitrogen cycle?

<p>The conversion of organic nitrogen compounds into ammonia and ammonium ions (B)</p> Signup and view all the answers

Which process converts atmospheric nitrogen into ammonia or other compounds by nitrogen-fixing bacteria or through industrial processes?

<p>Nitrogen Fixation (C)</p> Signup and view all the answers

What is the importance of ammonification in the nitrogen cycle?

<p>Converts organic nitrogen compounds into ammonia, making nitrogen available for reuse (D)</p> Signup and view all the answers

What is the definition of nitrogen fixation in the nitrogen cycle?

<p>The conversion of atmospheric nitrogen into ammonia or other compounds (B)</p> Signup and view all the answers

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