The Nitrogen Cycle

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Nitrifying bacteria - what do they do?
Convert ammonium ions to nitrate ions (via nitrite). Used in nitrification.
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Anaerobic denitifying bacteria - what do they do?
Convert nitrates to atmospheric nitrogen. Used in denitrification.
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Nitrogen fixing bacteria - what do they do?
Convert atmospheric nitrogen to nitrogen compounds. Live on root nodules with which they have a mutualistic relationship.
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Why do living organisms require nitrogen?
Used to manufacture proteins.
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How do plants uptake nitrogen?
Uptake nitrates using absorption, diffusion and active transport via root hairs.
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De-nitrifying bacteria - what do they do?
Convert nitrates in the soil to atmospheric nitrgoen. Thrive in anaerobic soil conditions e.g. waterlogged land and compost heaps. Farmers ensure their land is drained.
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Card 2

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Anaerobic denitifying bacteria - what do they do?

Back

Convert nitrates to atmospheric nitrogen. Used in denitrification.

Card 3

Front

Nitrogen fixing bacteria - what do they do?

Back

Preview of the front of card 3

Card 4

Front

Why do living organisms require nitrogen?

Back

Preview of the front of card 4

Card 5

Front

How do plants uptake nitrogen?

Back

Preview of the front of card 5
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