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Flashcards on Nitrogen Cycle
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What is nitrogen fixation?
The process by which certain bacteria convert nitrogen gas into ammonia.
What is denitrification?
The process by which bacteria convert nitrates back into nitrogen gas.
What role do plants play in the nitrogen cycle?
Plants absorb nitrogen from the soil to help them grow.
What happens during nitrification?
Ammonia is converted to nitrites, then to nitrates by bacteria.
How do animals contribute to the nitrogen cycle?
Animals release nitrogen compounds through waste and decomposition.
What is the importance of nitrogen in living organisms?
Nitrogen is essential for the production of proteins and DNA.
Explain the process of ammonification.
Decomposers break down organic matter to release ammonia.
Describe the role of lightning in the nitrogen cycle.
Lightning converts nitrogen gas to nitrate, which plants can absorb.
What are some human activities that impact the nitrogen cycle?
Fertilizer use and burning of fossil fuels contribute to nitrogen pollution.
How does excess nitrogen in ecosystems lead to environmental issues?
It can cause algal blooms, water pollution, and harm to aquatic life.
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Test Your Knowledge
What is the process by which certain bacteria convert nitrogen gas into ammonia?
Nitrification
Denitrification
Nitrogen Fixation
Ammonification
Check Answers
What is the main role of plants in the nitrogen cycle?
Denitrification
Absorbing nitrogen from the soil
Nitrification
Nitrogen fixation
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Which process involves converting ammonia to nitrites and then to nitrates?
Nitrification
Nitrogen fixation
Denitrification
Ammonification
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What occurs during the process of denitrification?
Nitrogen fixation
Conversion of nitrates back into nitrogen gas
Nitrification
Ammonification
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How do animals contribute to the nitrogen cycle?
Nitrogen fixation
Nitrification
Releasing nitrogen compounds through waste and decomposition
Ammonification
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Why is nitrogen important for living organisms?
Absorption by plants
Conversion to nitrates
Essential for protein and DNA production
Nitrogen fixation
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What is the process where decomposers break down organic matter to release ammonia?
Nitrogen fixation
Denitrification
Nitrification
Ammonification
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How does lightning contribute to the nitrogen cycle?
Nitrification
Denitrification
Ammonification
Converts nitrogen gas to nitrate for plant absorption
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What are some human activities that impact the nitrogen cycle?
Natural processes
Environmental factors
Fertilizer use and burning of fossil fuels
Animal contributions
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Why does excess nitrogen in ecosystems lead to environmental issues?
Promotes plant growth
Nurtures aquatic life
Causes algal blooms, water pollution, and harm to aquatic life
Balances the nitrogen cycle
Check Answers
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