Nitrogen Cycle — Definition & Diagrams
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- How Is Nitrogen Moved Through the Environment? The nitrogen cycle is a biogeochemical cycle consisting of different forms of nitrogen. All organisms require nitrogen to make ami…
By Aaron Lauer, Alex Federspiel, Gabi Slizewska, Deena Hauze, Valeri Natole, Mario Janakis
- (Video) Nitrogen and Phosphorus Cycles: Always Recycle! by CrashCourse Nitrogen is constantly being transported between organisms and the environment. In this video, Hank from C…
By Deena Hauze, Alex Federspiel, Gabi Slizewska, Mario Janakis
- Nitrogen is one of the key molecules of life. It is one of the main components of nucleic acids, DNA and RNA. The nitrogen cycle describes how nitrogen moves through the biosphe…
By Gabi Slizewska, Deena Hauze, Valeri Natole, Mario Janakis
Problems 21
- Which of the following statements about the nitrogen cycle is true?
- Why can't plants and animals use/break down the nitrogen from the atmosphere?
- What sort of plants hold bacteria that can fix nitrogen?
- What process puts nitrogen back into the atmosphere?
- What is nitrogen fixation?
- What is ammonification?
- What does nitrification do?
- What does denitrification do?
- Which of the following conversions is not an example of nitrification?
- Which process turns atmospheric nitrogen (N2_22) into ammonia (NH3_33)?
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- Which process converts atmospheric nitrogen (N2_22) to ammonia (NH3_33)?
- Animal waste can be converted to ammonium (NH4_44+^++) during which of the following processes?
- You find a nitrate compound. Which of the following elements of the nitrogen cycle can take place next? Select any that apply.
- Which of the following is released through pollution from cars?
- Which of the following is one reason why humans carry out industrial nitrogen fixation?
- Lightning carries a huge amount of energy! When it travels through our atmosphere, it breaks apart nitrogen molecules (N2_22), and allows them to combine with oxygen molecules …
- Certain legumes are a host to bacteria called rhizobia. The two live in a symbiotic relationship, where the plant provides nutrients and energy for the bacteria. Which of the fo…
- During cellular respiration, most organisms use oxygen to make ATP. However, some bacteria can use nitrates when oxygen is not available. Which of the following is the byproduct…
- Which of the following can't be used by most organisms?
- Which series of conversions in the nitrogen cycle is correct?
- Which of the following remove nitrogen from soil? Select any that apply.