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Terms in this set (12)
Why is nitrogen important to organisms?
all plants and animals need nitrogen to make amino acids proteins and DNA
What must happen to nitrogen before plants and animals can use it?
lightening and bacteria coverts nitrogen to useable form
What organisms are able to "fix", or convert, nitrogen to be usable by plants?
How else might nitrogen be "fixed" or converted?
when organism die they bring nitrogen to the soil and bacteria alters it so plants and animals can use it
coverts atmospheric nitrogen to ammonium which can be used to make organic compound like amino acids
What can fix nitrogen
only certain bacteria and industrial technologies
some live in symbiotic relationship with plants such as legume family
is one of the primary nutients critical for all living organism
78% of the air
component of amino acids atp dna chlorophyll
bacteria adds nitrogen to oxygen in two steps
bacteria takes in nh4 or nh3 to make nitrite then take the nitrite n02 to make nitrate n03
the ammonia the nitrogen fixing bacteria is quickly incorporated into proteins or other compounds
It is absorbed by a plant or bacteria or soil organism
organism on the top of the food chain eat and grow the fixed nitrogen
removes nitrogen from ecosystem and coverts it back to atmospheric
humans increase the amount of nitrogen with combustion fossil fuels
THIS SET IS OFTEN IN FOLDERS WITH...
Nitrogen Cycle Chapter 10
Water, nitrogen & carbon cycle
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