Nitrogen Cycle
Passage
•
Science
•
11th Grade
•
Practice Problem
•
Easy
Krista Marcum
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of Earth's atmosphere is nitrogen gas (N₂)?
21%
50%
78%
10%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which organisms carry out biological nitrogen fixation?
Fungi
Leguminous bacteria
Protozoa
Viruses
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During nitrification, ammonia is converted first to:
Nitrogen gas
Nitrite
Nitrate
Ammonium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The conversion of nitrate back to nitrogen gas is known as:
Denitrification
Ammonification
Nitrification
Assimilation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Plants primarily take up nitrogen in which form?
Nitrogen gas (N₂)
Ammonia (NH₃)
Nitrate (NO₃⁻)
Nitrite (NO₂⁻)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is ammonification?
Conversion of ammonia to nitrate
Breakdown of organic nitrogen to ammonia
Conversion of nitrate to nitrogen gas
Fixation of nitrogen gas
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process returns nitrogen to the atmosphere?
Nitrification
Ammonification
Denitrification
Assimilation
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