Notes: The Nitrogen Cycle

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Presentation transcript:

Notes: The Nitrogen Cycle

(1) Nitrogen Type of element or atom Common Compounds: All living things made with Nitrogen compounds! Common Compounds: Nitrate (NO3) Nitrite (NO2) Ammonia (NH3) Urea (NH2)2CO Ammonium Nitrate (NH4NO3)

(2) Nitrogen & Bacteria ~80% of the air is Nitrogen Gas (N2) Most organisms cannot do anything with N2 Most organisms use nitrates Bacterial Conversion: Bacteria in soil convert N2  Nitrates Bacteria in soil convert Ammonium  Nitrites  Nitrates

(3) Nitrogen & Decomposers Break down dead remains of plants + animals Produce Ammonium Production of Ammonium allows other organisms (bacteria) to produce useful Nitrates!

(4) Nitrogen & Legumes Legumes: Fruit in a Pod Peas, Beans, Lentils, Peanuts Have symbiotic relationship w/bacteria Able to convert N2 gas  Ammonium