The Nitrogen Cycle (Leaving Cert Biology): Flashcards
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Practise the cards
15 cards from this deck
Nutrient recycling
Nutrient recycling
How elements are absorbed, released, and reused by organisms
Elements that can be continuously recycled
Elements that can be continuously recycled
Carbon and nitrogen
Why plants need nitrogen
Why plants need nitrogen
To make proteins
Where nitrogen-fixing bacteria are found
Where nitrogen-fixing bacteria are found
In nodules on roots of legumes
What nitrogen-fixing bacteria produce from nitrogen gas
What nitrogen-fixing bacteria produce from nitrogen gas
Nitrates
What plants use to make proteins
What plants use to make proteins
Nitrates
Relationship between nitrogen-fixing bacteria and plants
Relationship between nitrogen-fixing bacteria and plants
Mutualistic
Mutualism definition
Mutualism definition
Form of symbiosis where both organisms benefit
Symbiosis definition
Symbiosis definition
Two species living closely, at least one benefits
How animals obtain nitrogen
How animals obtain nitrogen
By eating plants and assimilating plant proteins
What decomposition releases into soil
What decomposition releases into soil
Ammonia
What nitrifying bacteria convert ammonia into
What nitrifying bacteria convert ammonia into
Nitrites, then nitrates
What denitrifying bacteria do
What denitrifying bacteria do
Convert nitrates back into nitrogen gas
Examples of legumes
Examples of legumes
Peas, beans, clover
Four bacteria types in nitrogen cycle
Four bacteria types in nitrogen cycle
Nitrogen-fixing, decomposing, nitrifying, denitrifying