Nitrogen Cycle #2
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the nitrogen cycle?
Back
The nitrogen cycle is the process in which nitrogen circulates and is recycled in the environment, involving various stages such as nitrogen fixation, nitrification, assimilation, ammonification, and denitrification.
2.
FLASHCARD QUESTION
Front
How do animals obtain nitrogen?
Back
Animals obtain nitrogen from the food they eat, which contains proteins and nucleic acids.
3.
FLASHCARD QUESTION
Front
What is the formula for atmospheric nitrogen?
Back
The formula for atmospheric nitrogen is N₂.
4.
FLASHCARD QUESTION
Front
What do plants absorb from the soil?
Back
Plants absorb nitrates from the soil, which they use to synthesize proteins and nucleic acids.
5.
FLASHCARD QUESTION
Front
Describe a correct path that nitrogen could take in the nitrogen cycle.
Back
A correct path that nitrogen could take is: air -> bacteria -> plants -> animals.
6.
FLASHCARD QUESTION
Front
What role do nitrogen-fixing bacteria play in the nitrogen cycle?
Back
Nitrogen-fixing bacteria convert atmospheric nitrogen (N₂) into ammonia (NH₃), making nitrogen available to plants.
7.
FLASHCARD QUESTION
Front
What is nitrification?
Back
Nitrification is the process by which ammonia (NH₃) is converted into nitrites (NO₂⁻) and then into nitrates (NO₃⁻) by bacteria.
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