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1843356
The Nitrogen Cycle- Biol 4
Description
A Levels Biology Quiz on The Nitrogen Cycle- Biol 4, created by elizabethc2114 on 07/01/2015.
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biology
a levels
Quiz by
elizabethc2114
, updated more than 1 year ago
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Created by
elizabethc2114
almost 10 years ago
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Resource summary
Question 1
Question
Which stage of the nitrogen cycle converts nitrogen gas into nitrogen-containing compounds?
Answer
Ammonification
Nitrification
Nitrogen-fixation
Denitrification
Question 2
Question
Which stage of the nitrogen cycle produces ammonia from organic ammonium-containing compounds?
Answer
Ammonification
Nitrification
Nitrogen-fixation
Denitrification
Question 3
Question
Which stage of the nitrogen cycle is involved in the conversion of ammonium ions to nitrate ions?
Answer
Ammonification
Nitrification
Nitrogen-fixation
Denitrification
Question 4
Question
Which stage of the nitrogen cycle involve denitrifying bacteria which convert soil nitrates into gaseous nitrogen?
Answer
Ammonification
Nitrification
Nitrogen-fixation
Denitrification
Question 5
Question
What are the two main types of microorganisms that carry out nitrogen fixation?
Answer
Saprobiotic bacteria
Free-living nitrogen-fixing bacteria
Denitrifying bacteria
Mutualistic nitrogen-fixing bacteria
Question 6
Question
What do free-living nitrogen-fixing bacteria do?
Answer
Reduce gaseous nitrogen to ammonia, which they then use to manufacture amino acids
Turn ammonia into gaseous nitrogen, which they then use to manufacture amino acids
Question 7
Question
Mutualistic nitrogen-fixing bacteria live in nodules of roots and plants e.g. peas and beans
Answer
True
False
Question 8
Question
Mutualistic nitrogen-fixing bacteria obtain fats from the plant and the plant acquires amino acids from the bacteria
Answer
True
False
Question 9
Question
Soils must be well aerated to prevent the build-up of denitrifying bacteria
Answer
True
False
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