The Nitrogen Cycle- Biol 4

Description

A Levels Biology Quiz on The Nitrogen Cycle- Biol 4, created by elizabethc2114 on 07/01/2015.
elizabethc2114
Quiz by elizabethc2114, updated more than 1 year ago
elizabethc2114
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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