Print Instructions

NOTE: Only your test content will print.
To preview this answer key, click on the File menu and select Print Preview.

Click here to print this answer key!
Click here to save or print this answer key as a PDF!
See our guide on How To Change Browser Print Settings to customize headers and footers before printing.

The Nitrogen Cycle

Print Answer Key (Only the test content will print)

The Nitrogen Cycle Answer Key

Use the diagram of the nitrogen cycle to help answer the questions.
Nitrogen Cycle Wihtout Text Labels
1. 
                 , shown by the letter                  , drive(s) the nitrogen cycle.
  1. Bacteria; A
  2. Bacteria; H
  3. Photosynthesis; C
  4. Photosynthesis; I
2. 
Which letter sequence shows the processes of fixation, nitrification, and assimilation in that order?
  1. A, L, E
  2. A, E, L
  3. E, L, A
  4. L, E, A
3. 
Which form of nitrogen is represented by J?
  1. nitrite
  2. nitrate
  3. organic
  4. ammonia
4. 
Which shows a simplified version of the conversion of nitrogen represented by C?
  1. [math]"nitrate" -> "nitrogen (g)"[/math]
  2. [math]"ammonium" -> "nitrite"[/math]
  3. [math]"nitrogen (g)" -> "nitrate"[/math]
  4. [math]"ammonium" -> "nitrogen (g)"[/math]
5. 
Which of the plants below would be most beneficial to the process occurring at I?
  1. corn
  2. alfalfa
  3. tomato
  4. spinach
6. 
Fixation is occurring primarily at
  1. A and I.
  2. L and M.
  3. A and M.
  4. L and I.
7. 
Which best describes the function of process shown by B in the nitrogen cycle?
  1. fixes atmospheric nitrogen
  2. releases nitrogen gas into the atmosphere
  3. deposits organic nitrogen into the soil
  4. deposits inorganic nitrogen into the soil
8. 
Which of the letters below best represents where the process of mineralization would happen?
  1. A
  2. C
  3. F
  4. M
9. 
The cow in the diagram gets its organic nitrogen by                         and uses it to create                        .
  1. breathing; vitamins
  2. breathing; proteins
  3. eating plants; vitamins
  4. eating plants; proteins
10. 
If the factory in the diagram is using the Haber Process, it is using an industrial method for
  1. fixation.
  2. assimilation.
  3. denitrification.
  4. mineralization.

Become a Help Teaching Pro subscriber to access premium printables

Unlimited premium printables Unlimited online testing Unlimited custom tests

Learn More About Benefits and Options

You need to be a HelpTeaching.com member to access free printables.
Join for FREE »
Already a member? Log in for access.    |    Go Back To Previous Page