Paolo Resma
Mind Map by Paolo Resma, updated more than 1 year ago
Paolo Resma
Created by Paolo Resma over 1 year ago


Mind map about Nitrogen and the Nitrogen cycle For OCR Gateway (9-1)

Resource summary

1 Explain the Importance of recycling Nitrogen
1.1 Plants and Animals cannot live without Nitrogen
1.2 By recycling Nitrogen, nothing is wasted so the amount of Nitrogen never changes
2 Bacteria Involved
2.1 Three types
2.1.1 Nitrogen Fixing Turns N2 gas into nitrogen compunds (nitrates)
2.1.2 Nitrifying Bacteria Turns ammonia into Nitrates
2.1.3 Denitrifying bacteria Turns Nitrates into N2 gas
3 General Facts of Nitrogen
3.1 Different forms of Nitrogen
3.1.1 Nitrogen Most common form. Makes up to 78% of the atmosphere but cannot be used by plants N2
3.1.2 Nitrate - (Nitrogen Compounds) Form used by plants. Lost easily to groundwater NO3
3.1.3 Ammonium Nitrogen NH4 Used directly in proteins by plants. It is not lost as easily from the soil
3.1.4 Organic Nitrogen C-NH2 (where C is a complex organic group) Exists in many forms- It is changed into ammonium, then into nitrates
3.2 What is Nitrogen Fixing?
3.2.1 When Nitrogen turns into nitrates
3.3 What is Nitrogen used for?
3.3.1 Fertilizer
3.3.2 Nitric Acid
3.3.3 Nylon
3.3.4 Dyes
3.3.5 Explosives
3.3.6 Creates Ammonia
3.4 Organisms involved within the cycle
3.4.1 Plants Takes in Nitrates to make protein for growth
3.4.2 Decomposers - bacteria and fungi Converts proteins and urea into Ammonia
3.4.3 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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