Zusammenfassung der Ressource
Frage 1
Frage
Which stage of the nitrogen cycle converts nitrogen gas into nitrogen-containing compounds?
Antworten
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Ammonification
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Nitrification
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Nitrogen-fixation
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Denitrification
Frage 2
Frage
Which stage of the nitrogen cycle produces ammonia from organic ammonium-containing compounds?
Antworten
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Ammonification
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Nitrification
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Nitrogen-fixation
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Denitrification
Frage 3
Frage
Which stage of the nitrogen cycle is involved in the conversion of ammonium ions to nitrate ions?
Antworten
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Ammonification
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Nitrification
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Nitrogen-fixation
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Denitrification
Frage 4
Frage
Which stage of the nitrogen cycle involve denitrifying bacteria which convert soil nitrates into gaseous nitrogen?
Antworten
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Ammonification
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Nitrification
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Nitrogen-fixation
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Denitrification
Frage 5
Frage
What are the two main types of microorganisms that carry out nitrogen fixation?
Frage 6
Frage
What do free-living nitrogen-fixing bacteria do?
Antworten
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Reduce gaseous nitrogen to ammonia, which they then use to manufacture amino acids
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Turn ammonia into gaseous nitrogen, which they then use to manufacture amino acids
Frage 7
Frage
Mutualistic nitrogen-fixing bacteria live in nodules of roots and plants e.g. peas and beans
Frage 8
Frage
Mutualistic nitrogen-fixing bacteria obtain fats from the plant and the plant acquires amino acids from the bacteria
Frage 9
Frage
Soils must be well aerated to prevent the build-up of denitrifying bacteria