SVN 3m: The Nitrogen Cycle
SVN 3M The Nitrogen Cycle Name: Isabelle Rowe
Go to the following website: http://nortonbooks.com/college/biology/animations/ch38a02.htm
1. What are the 2 forms of usable nitrogen?
The two forms of usable of nitrogen are ammonium and nitrates.
2. What is the term used for this conversion process?
This conversion of N2 (nitrogen) into NH4+ (ammonium) and NO3- (nitrate) is called nitrogen fixation.
3. Much of nitrogen fixation by humans is done by what?
Most of nitrogen fixation done by humans is the result of industrial production of fertilizers.
4. How is nitrogen returned back to the atmosphere?
Nitrogen is returned back into the atmosphere through denitrification, which is done by soil bacteria.
5. Do the quiz at the
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What do nitrifying bacteria do?
The nitrifying bacteria turn nitrogen into usable nitrates, which the plants can take up.
2. Explain the process of ammonification.
Bacteria convert nitrogen gases into ammonium, which allows nitration to turn ammonium into nitrates.
Go to the web site: http://www.studystack.com/matching-1457
1. Do the nitrogen cycle quiz.
Go to the web site: http://www.nodvin.net/snhu/SCI219/demos/Chapter_3/Chapter_03/Present/animations/32_2_1a.html
1. Why is nitrogen such a critical nutrient?
Nitrogen is important for the growth. It helps create amino acids, DNA, and proteins.
2. How is some of this nitrate converted by to nitrogen?
The conversion of nitrates into nitrogen is called denitrification.
Go to the website: http://www.hippocampus.org/homework-help/Biology/Ecosystems_The%20Nitrogen%20Cycle.html
1. How can excess nitrates from fertilizers be a problem for the environment?
The nitrate gets into the runoff, which leads to overgrowth of algae and aquatic plants in pounds, lakes, and oceans.
2. Do the quiz.
Go to the website: http://www.bbc.co.uk/schools/gcsebitesize/science/21c/food/naturalpolymersrev3.shtml
1. What is the Haber
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