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Flashcards in Nitrogen Cycle Deck (8)
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1

Nitrogen into organic compounds

Through assimilation and feeding

2

Decomposition

Produces ammonia from nitrogen, proteins, DNA and vitamins

3

Nitrification

Ammonia oxidised into nitrite then nitrate by nitrifying bacteria

4

Plant Roots

Absorb Nitrates combine with carbs making amino acids as well as other nitrogen compounds

5

Denitrifying bacteria

Use Nitrates an energy source convert to N gas. Reducing amount in soil

6

Free living nitrogen-fixing bacteria

Soil, nitrogen-ammonia used by bacteria to make amino acid/protein. When dead protein decomposes. Ammonia back to soil

7

Nitrogen fixing bacteria in root nodules

Ammonia converted into amino acids and nitrogen compound. Decomposition returns ammonia to soil.

8

Sulphur dioxide

Wears buildings
Harmful to plants.