Understanding the Nitrogen Cycle

Practice Questions

High School Biology › Understanding the Nitrogen Cycle

Questions
9
1

Why can plants not utilize naturally occurring nitrogen gas?

2

What is the main way that fixed nitrogen is released back into the atmosphere?

3

Which of the following is most directly responsible for nitrogen fixation?

4

Which of the following is not a way in which nitrogen is fixed?

5

Which of the following biological processes is not linked to the nitrogen cycle?

6

How do plants obtain nitrogen?

7

Is the majority of the Earth's nitrogen immediately available for use by plants and other living organisms? Why?

8

What is the largest natural reservoir nitrogen on earth?

9

Nitrification is the process of turning __________ into __________.

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