Nitrogen Fixation Quiz: Trivia Questions!

15 Questions | Total Attempts: 195

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Nitrogen Fixation Quiz: Trivia Questions!

Do you know anything about nitrogen fixation? It is a procedure by which molecular nitrogen in the air is converted into ammonia or related nitrogenous soil compounds. Nitrogen fixation is crucial to life because fixed inorganic nitrogen compounds are necessary for all nitrogen biosynthesis containing organic compounds such as amino acids and proteins, nucleoside triphosphates, and nucleic acids. If you need to learn about nitrogen fixation, this quiz can help.


Questions and Answers
  • 1. 
    N and P are nutrients substances required by the microorganism to survive. N is a limiting factor and depletion due to?
    • A. 

      Microbial denitification, soil erosion and chemical volatilization

    • B. 

      Chemical volatilization and Chemical development

    • C. 

      Soil erosion and suspension

    • D. 

      Microbial denitrification and microbial nitrification

  • 2. 
    Nitrogen in agricultural soil can be replaced by?
    • A. 

      Commercial inorganic fertilizers

    • B. 

      Commercial organic fertilizer

    • C. 

      Home ­ made fertilizer

    • D. 

      Systematic nitrogen fixation (SNF) system

  • 3. 
    Nitrogen fixation is a process of reducing nitrogen gas into ammonia by the microorganism. What is/are the microorganism that able to fix nitrogen?
    • A. 

      Staphylococcus aureus

    • B. 

      Escherichia coli and Enterobacter aerogenes

    • C. 

      Azotobacter vialandii and Cyanobacteria

    • D. 

      Salmonella

  • 4. 
    In nitrogen fixation, what is/are the important requirement to complete this mechanism?
    • A. 

      It requires oxygen and tremendous energy

    • B. 

      It requires oxygen to initiate the process

    • C. 

      It requires nitrogenase and tremendous energy 

    • D. 

      It requires less energy at the beginning and high energy at the end of the process

  • 5. 
    Nitrosomonas and Nitrobacter can be put in which group of microbial nutrition? 
    • A. 

      Chemolitotroph

    • B. 

      Chemoorganotroph

    • C. 

      Photolitotroph

    • D. 

      Photoorganotroph

  • 6. 
    During denitrification, Nitrate is converted into gaseous nitrogen and nitrous oxide under the?
    • A. 

      Anaerobic condition

    • B. 

      Aerobic condition

    • C. 

      Strict aerobic condition

    • D. 

      Aerotolerant condition

  • 7. 
    Nitrogenase is an enzyme that very sensitive to oxygen. What are the proteins that use to compose this enzyme?
    • A. 

      Fe and Zn protein

    • B. 

      MoFe and Fe protein

    • C. 

      MoFe and Mn protein

    • D. 

      All above are incorrect

  • 8. 
    The classification of nitrogen fixation.
    • A. 

      Symbiotic nitrogen fixation

    • B. 

      Para symbiotic nitrogen fixation

    • C. 

      Mixed symbiotic nitrogen fixation

    • D. 

      Non symbiotic nitrogen fixation

  • 9. 
    Examples of diazotrophs?
    • A. 

      Rhizobium

    • B. 

      Azorhizobium

    • C. 

      Chlorobium

    • D. 

      Bradyrhizobium

  • 10. 
    Haber­Bosch process?
    • A. 

      Directly synthesize ammonia from H and N

    • B. 

      Production pressure at 200­400 atm

    • C. 

      Sometimes, the production pressure can be done at 100­199 atm.

    • D. 

      Method was translated to large scale process.

  • 11. 
    Microorganisms that able to fix nitrogen are diazotrophs, cyanobacteria, azotobacteraceae, rhizobia and Frankia.
    • A. 

      True

    • B. 

      False

  • 12. 
    Association of rhizobia and plant is specific (mutual recognition between partners).
    • A. 

      True

    • B. 

      False

  • 13. 
    During modulation, tryptophan secreted by plant root is not metabolized to indoleacetic acid (IAA) by rhizobia.
    • A. 

      True

    • B. 

      False

  • 14. 
    Flavonoids or isoflavonoids secreted by host plants induce expression of nodulation genes in rhizobial bacteria.
    • A. 

      True

    • B. 

      False

  • 15. 
    Nitrate (NO3­) pollution will not cause methemoglobinemia.
    • A. 

      True

    • B. 

      False

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