The Nitrogen Cycle Pimlico
10 Questions
| Attempts: 95
Nitrogen cyclemade for a-level biology
Questions and Answers
- 1.How do animals obtain nitrogen?
- A.
By fixing nitrogen from the atmosphere
- B.
By ammonification
- C.
By feeding and digesting plants
- D.
By nitrification
- 2.Nitrogen in the atmosphere is fixated by:
- 3.Free-living bacteria turn nitrogen into:
- 4.Detrification involves removing this element
- 5.Mutualistic bacteria live where?
- 6.Ammonification is the production of ammonia from organic molecules that contain ammonium. An example of these molecules could be:
- 7.Ammonium to nitrite is
- A.
Oxidation
- B.
Reduction
- 8.Nitrite to nitrate is
- A.
Oxidation
- B.
Reduction
- 9.When eutrophication occurs, there are more of this type of bacteria in the soil
- 10.Increased anaerobic denitrifying bacteria is a bad thing because
- A.
More nitrogen is converted to nitrates
- B.
More nitrates are converted to nitrogen
- C.
More ammonium is produced
- D.
More oxidation occurs
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