Nitrogen Cycle Flashcards
1
Q
Nitrogen into organic compounds
A
Through assimilation and feeding
2
Q
Decomposition
A
Produces ammonia from nitrogen, proteins, DNA and vitamins
3
Q
Nitrification
A
Ammonia oxidised into nitrite then nitrate by nitrifying bacteria
4
Q
Plant Roots
A
Absorb Nitrates combine with carbs making amino acids as well as other nitrogen compounds
5
Q
Denitrifying bacteria
A
Use Nitrates an energy source convert to N gas. Reducing amount in soil
6
Q
Free living nitrogen-fixing bacteria
A
Soil, nitrogen-ammonia used by bacteria to make amino acid/protein. When dead protein decomposes. Ammonia back to soil
7
Q
Nitrogen fixing bacteria in root nodules
A
Ammonia converted into amino acids and nitrogen compound. Decomposition returns ammonia to soil.
8
Q
Sulphur dioxide
A
Wears buildings
Harmful to plants.
