Nitrogen Cycle (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why is nitrogen essential for living organisms?
Why is nitrogen essential for living organisms?
Forms proteins & nucleic acids
What percentage of the atmosphere is nitrogen gas?
What percentage of the atmosphere is nitrogen gas?
78%
In what form do plants absorb nitrogen from soil?
In what form do plants absorb nitrogen from soil?
Nitrate ions ()
How do plants absorb nitrate ions from the soil?
How do plants absorb nitrate ions from the soil?
Active transport
Which are the four main stages of the nitrogen cycle?
Which are the four main stages of the nitrogen cycle?
Fixation, ammonification, nitrif., denitrif.
Where do mutualistic nitrogen-fixing bacteria live?
Where do mutualistic nitrogen-fixing bacteria live?
In root nodules of legumes
What do plants provide to mutualistic nitrogen-fixing bacteria?
What do plants provide to mutualistic nitrogen-fixing bacteria?
Carbohydrates
What does ammonification produce from dead organisms?
What does ammonification produce from dead organisms?
Ammonia
What are the two stages of nitrification?
What are the two stages of nitrification?
to then to
Under what conditions does denitrification occur?
Under what conditions does denitrification occur?
Waterlogged soil & low oxygen