- World's Largest Collection of Interview Questions
Start Your Own website Now
Sponsored Links

Interview Questions
Our Services

Get 9,000 Interview Questions & Answers in an eBook.

  • 9500+ Pages
  • 9000 Question & Answers
  • All Tech. Categories
  • 14 MB Content

    Get it now !!

    Send your Resume to 6000 Companies

    Question :
    What is the nitrogen cycle?
    Category Ecology Interview Questions
    Rating (0.4) By 851 users
    Added on 9/24/2009
    Views 1496
    Rate it!

    The nitrogen cycle represents the circulation and recycling of the chemical element nitrogen in nature.

    The nitrogen cycle depends on the action of some specialized bacteria. Bacteria of the soil called nitrogen-fixing bacteria present in plant roots absorb molecular nitrogen from the air and liberate nitrogen under the form of ammonia. The decomposition of organic material also produces ammonia. In the soil and roots (mainly of leguminous), a first group of chemosynthetic bacteria called nitrifying bacteria, the nitrosomonas, produces energy consuming ammonia and releasing nitrite (NO2). The second group of nitrifying bacteria, the nitrobacteria, uses nitrite in chemosynthesis releasing nitrate (NO3). In the form of nitrate, nitrogen is then incorporated by the plants to be used as constituent of proteins and nucleic acids and the element then follows along the food chain. Nitrogen returns to the atmosphere by the action of denitrifying bacteria that use nitrogen-containing compounds from the soil and release nitrogen gas (molecular nitrogen).

    Image Diversity: the nitrogen cycle

    If you have the better answer, then send it to us. We will display your answer after the approval.
    Rules to Post Answers in

  • There should not be any Spelling Mistakes.
  • There should not be any Gramatical Errors.
  • Answers must not contain any bad words.
  • Answers should not be the repeat of same answer, already approved.
  • Answer should be complete in itself.
  • Name :*
    Email Id :*
    Answer :*
    Verification Code Code Image - Please contact webmaster if you have problems seeing this image code Not readable? Load New Code
    Process Verification  Enter the above shown code:*
    Inform me about updated answers to this question

    Related Questions
    View Answer
    Under which form is nitrogen fixed by the living beings.
    View Answer
    What is the most abundant form under which nitrogen is found in nature?
    View Answer
    What are fossil fuels?
    View Answer
    How is carbon dioxide made by producers and consumers?
    View Answer
    What is the main biological process that consumes carbon dioxide?
    View Answer
    What is the carbon cycle?
    View Answer
    Why is the sun the "motor" of the water cycle?
    View Answer
    What is the water cycle?
    View Answer
    What is the respective importance of water, carbon, and nitrogen for the living beings?
    View Answer
    What are biogeochemical cycles?
    View Answer
    What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
    View Answer
    What are the destinations of the organic material fabricated by the producers?
    View Answer
    What are the factors that for influencing photosynthesis also interfere with the gross primary productivity?
    View Answer
    What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
    View Answer
    Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels? What does that condition means to the conformation of the energy pyramids?
    View Answer
    Into which type of energy is the light used in photosynthesis transformed.
    View Answer
    What do energy pyramids represent?
    View Answer
    What is dry mass?
    View Answer
    What do biomass pyramids represent?
    View Answer
    In the short range what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?
    View Answer

    Please Note: We keep on updating better answers to this site. In case you are looking for Jobs, Pls Click Here - Best Freshers & Experienced Jobs Website.

    View ALL Ecology Interview Questions

    User Options
    Sponsored Links

    Copyright ©2003-2015, All Rights Reserved.
    Privacy Policy | Terms and Conditions

    Download Yahoo Messenger | Placement Papers| FREE SMS | ASP .Net Tutorial | Web Hosting | Dedicated Servers | C Interview Questions & Answers

    Testing Articles | Testing Books | Testing Certifications | Testing FAQs | Testing Downloads | Testing Interview Questions | Testing Jobs | Testing Training Institutes

    Cache = 0.03125 Seconds