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Nat5 life on earth

Nat5 Nitrogen cycle

What is a nitrogen cycle? A process by which nitrogen is recycled between the air, plants, animals and the soil.
Why is nitrogen important? It is necessary to make protein.
Name a stage that does not involve bacteria in the nitrogen cycle eating/absoprtion
What controls the nitrogen cycle? Three types of bacteria
What do nitrogen fixing bacteria do? Convert nitrogen gas into protein
Where are nitrogen fixing bacteria found? In the soil OR root nodules
What do denitrifying bacteria do? convert nitrate into nitrogen gas/air
Which part of the nitrogen cycle does not involve bacteria? Animals eating plants (food chain)
What substance are dead plants and animals broken down into? Ammonia
Organisms that break down dead animals/plants are Decomposers
Decomposers include fungi and bacteria
What do nitrifying bacteria do? Convert ammonia into nitrite and then into nitrate
Which is the only two step process in nitrogen cycle? Nitrification
What is absorption Plants take up nitrate by their roots and use it to make protein
Created by: dr.prorocic