The Nitrogen Cycle

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Ammonification
The production of ammonia from organic ammonium-containing conpounds. Saprobitoitc microorganisms feed on these materials, releasing ammonia, which then forms ammonium ions in the soil.
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Nitrification
An oxidation reaction that converts ammonium ions to nitrate ions. It is carried out by free-living soil bacteria called nitrifying bacteria.
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Nitrogen Fixation
The process by which nitrogen gas is converted into nitrogen-containing compounds.
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Free-Living Nitrogen-Fixing Bacteria
They reduce gaseous nitrogen to ammonia, which they use to manufacture amino acids. (Carry out nitrogen fixation)
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Mutualistic Nitrogen-Fixing Bacteria
They live in nodules on the roots of plants such as peas and beans. They obtain carbohydrates from the plant and the plant acquires amino acids from the bacteria. (Carry out nitrgen fixation)
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Denitrification
When soil nitrates are converted into gaseous nitrogen.
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Anaerobic Denitrifying Bacteria
Found in the soil when it becomes waterlogged and carry out the process of denitrification.
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Other cards in this set

Card 2

Front

An oxidation reaction that converts ammonium ions to nitrate ions. It is carried out by free-living soil bacteria called nitrifying bacteria.

Back

Nitrification

Card 3

Front

The process by which nitrogen gas is converted into nitrogen-containing compounds.

Back

Preview of the back of card 3

Card 4

Front

They reduce gaseous nitrogen to ammonia, which they use to manufacture amino acids. (Carry out nitrogen fixation)

Back

Preview of the back of card 4

Card 5

Front

They live in nodules on the roots of plants such as peas and beans. They obtain carbohydrates from the plant and the plant acquires amino acids from the bacteria. (Carry out nitrgen fixation)

Back

Preview of the back of card 5
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