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Terms in this set (23)
First step in the process of making nitrogen useable by plants.
This is the process by which ammonium gets changed into nitrates by bacteria.
This is how plants get nitrogen.
This is part of the decaying process.
Extra nitrogen in the soil gets put back out into the air.
Explain why bacteria are the most important part of the nitrogen cycle.
It fixes nitrogen for it to be used by plants.
What is the nitrogen cycle?
Nitrogen being fixed, used by plants, and later returned to the atmosphere.
What part do decomposers play in the nitrogen cycle?
They turn the nitrogen back in ammonium.
How are nitrates formed?
After bacteria changes Nitrogen turns into ammonium (fixation), the bacteria changes into nitrates (nitrifiction).
If nearly 79% of the atmosphere is made of nitrogen, how could there be a shortage of nitrogen in soil?
The plants take up a lot of nitrogen from the soil.
What must be done before nitrogen gas can be used by living things?
Nitrogen has to be changed.
How do animals obtain usable nitrogen? Why is it important?
eating plants or other animals that contain nitrogen.
When organisms die, their bodies decompose bringing the nitrogen into the soil on land or into the ocean water. Bacteria alter the nitrogen into a form that plants are able to use.
Explain the denitrifying process in the nitrogen cycle
It reduces nitrogen gas than takes it out in the atmosphere.
Why are the denitrifying bacteria important to the nitrogen cycle?
Perform the essential process of the nitrogen cycle such as ammonification, nitrogen fixation, and nitrification.
Give the 2 ways nitrogen can be fixated so plants can use it to grow
Bacteria needs to convert into ammonia.
The energy from the lightning and water combined can help it.
Explain the problem if too much nitrogen enters an aquatic ecosystem
Too much nitrogen can pollute the water if entered in an aquatic system.
What occurs when lighting passes through air?
It converts nitrogen into ammoniumia.
How are compound carried to the earth?
Compounds are carried to the earth by asteroids.
Explain the statement "Nutrients do not flow in one direction in the ecosystem, they recycle through the ecosystem"
The flow of nutrients is not in an ecosystem, the nutrients does not flow in one direction.
What is the purpose of the blue-green bacteria that lives in the soil?
The purpose is to tell you that the soil is moist or wet.
How is the nitrogen returned to the soil?
Plants and animals die their nitrogen is returned to the soil as ammonia by bacteria through the process of decay.
Explain how proteins are made by plants
Cells inside the plants.
What are the roles of different bacteria in the nitrogen cycle?
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