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17492463
Nitrogen
Descrição
Mind map about Nitrogen and the Nitrogen cycle For OCR Gateway (9-1)
Sem etiquetas
science #biology #nitrogen
biology
gcse
Mapa Mental por
Paolo Resma
, atualizado more than 1 year ago
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Criado por
Paolo Resma
mais de 5 anos atrás
12
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Resumo de Recurso
Nitrogen
Explain the Importance of recycling Nitrogen
Plants and Animals cannot live without Nitrogen
By recycling Nitrogen, nothing is wasted so the amount of Nitrogen never changes
Bacteria Involved
Three types
Nitrogen Fixing
Turns N2 gas into nitrogen compunds (nitrates)
Nitrifying Bacteria
Turns ammonia into Nitrates
Denitrifying bacteria
Turns Nitrates into N2 gas
General Facts of Nitrogen
Different forms of Nitrogen
Nitrogen
Most common form. Makes up to 78% of the atmosphere but cannot be used by plants
N2
Nitrate - (Nitrogen Compounds)
Form used by plants. Lost easily to groundwater
NO3
Ammonium Nitrogen
NH4
Used directly in proteins by plants. It is not lost as easily from the soil
Organic Nitrogen
C-NH2 (where C is a complex organic group)
Exists in many forms- It is changed into ammonium, then into nitrates
What is Nitrogen Fixing?
When Nitrogen turns into nitrates
What is Nitrogen used for?
Fertilizer
Nitric Acid
Nylon
Dyes
Explosives
Creates Ammonia
Organisms involved within the cycle
Plants
Takes in Nitrates to make protein for growth
Decomposers - bacteria and fungi
Converts proteins and urea into Ammonia
Animals
Eating passes down Nitrates (Nitrogen Compounds) along a food web
Nitrates in dead plants and animals are being broken down by decomposers and returns to the soil
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