B1 - The Nitrogen Cycle

A quick summary on how nitrogen is passed between living organisms and the environment and why.

?
  • Created by: kat-y
  • Created on: 01-05-16 22:37
How much nitrogen is in the air?
78%
1 of 13
What does the nitrogen cycle show?
How the element nitrogen moves between the environment and living organisms
2 of 13
Why do plants need nitrogen?
To form amino acids to build up proteins
3 of 13
In which form can plants only take in nitrogen?
Nitrogen compounds such as nitrates
4 of 13
Why can plants not take in nitrogen as a gas to make proteins?
Because nitrogen gas is so unreactive
5 of 13
What is the role of nitrogen-fixing bacteria?
To convert nitrogen gas into nitrates
6 of 13
Where is nitrogen-fixing bacteria found? (2 possible answers)
In the soil and in the root nodules of plants
7 of 13
Describe the steps of the Haber process
Nitrogen gas is converted into ammonia and nitrifying bacteria converts it into nitrates
8 of 13
What is the role of decomposers in the nitrogen cycle?
to break down urea and egested material as well as the bodies of dead organisms
9 of 13
What results in the urea and egested material by being broken down?
The nitrogen returns to the soil as ammonia
10 of 13
What does the nitrifying bacteria do?
Nitrifying bacteria converts ammonia into nitrates
11 of 13
What does denitrifying bacteria do?
Denitrifying bacteria break down nitrates into nitrogen gas, which is then returned to the air (in waterlogged soil conditions)
12 of 13
Can lightning convert nitrogen gas into nitrates?
Yes
13 of 13

Other cards in this set

Card 2

Front

What does the nitrogen cycle show?

Back

How the element nitrogen moves between the environment and living organisms

Card 3

Front

Why do plants need nitrogen?

Back

Preview of the front of card 3

Card 4

Front

In which form can plants only take in nitrogen?

Back

Preview of the front of card 4

Card 5

Front

Why can plants not take in nitrogen as a gas to make proteins?

Back

Preview of the front of card 5
View more cards

Comments

Pokemon/Trainer

Report

This is incredibly helpful, just want to say thanks for the help! I definitely recommend this resource

Similar Biology resources:

See all Biology resources »See all Problems and solutions in the environment resources »