Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
The Carbon And Nitrogen Cycle
Test Description: Review Questions for the carbon and nitrogen cycle test.
Instructions: Answer all questions to get your test result.
1) Which below does NOT describe nitrogen?
A
All living things need nitrogen to build proteins and other important body chemicals.
B
It makes up about 78% of the gasses in our atmosphere.
C
Most organisms can get the nitrogen they need from the atmosphere.
D
It is an element.
2) Nitrogen which is not combined with any other element is
A
released nitrogen
B
free nitrogen
C
uncombined nitrogen
D
isotope nitrogen
3) What must happen to free nitrogen before organisms can use it?
A
It must combined with moisture in the atmosphere.
B
It must be converted into sugars by plants.
C
It must be separated by lightning.
D
It must combined with other elements to create nitrogen compounds.
4) What is the nitrogen cycle?
A
The path free nitrogen takes from the atmosphere, to living organisms, and back into the atmosphere.
B
Both A and B are correct.
C
A special setting on a washing machine to help clean nitrogen compounds.
D
A bicycle made of nitrogen.
5) Which way can nitrogen be fixed?
A
Both A and C are correct.
B
By lightning
C
By plants
D
By certain types of bacteria.
6) Where are nitrogen fixing bacteria NOT located?
A
Inside the structures on the roots of certain plants called legumes
B
In the atmosphere.
C
In the soil.
D
In the water.
7) Which below is not an example of a legume.
A
Potatoes
B
Peas
C
Beans
D
Peanuts
8) How do animals get the nitrogen they need?
A
By eating plants.
B
By eating animals.
C
By drinking water.
D
Both A and B.
9) What happens to the nitrogen in animal waste or decomposing organisms.
A
It is returned to plants in the form of free nitrogen.
B
It is released into the atmosphere.
C
It is released into the ground water in the form of carbohydrates.
D
It is returned to the soil in the form of ammonia.
10) Which below is NOT a step in fixing free nitrogen into usable nitrogen.
A
Nitrates are converted into carbohydrates through photosynthesis.
B
Ammonium is converted into nitrites.
C
Nitrites are converted into nitrates.
D
Free nitrogen is converted into ammonium.
11) Which below is NOT true about carbon.
A
It is the basis for all living things.
B
It can only be found in its pure form.
C
Inorganic (carbon dioxide) or organic (sugar).
D
It is an element.
12) The process by which plants take carbon dioxide, water and energy from the sun to produce sugars and oxygen.
A
Photosynthesis
B
Cellular Respiration
C
Oxygen Fixing
D
Transpiration
13) The process by which an organism takes sugar, combines it with oxygen to produce carbon dioxide, water vapor and energy.
A
Photosynthesis
B
Cellular Respiration
C
Transpiration
D
Oxygen Diffusion
14) Anything which releases carbon dioxide into the atmosphere is considered a
A
carbon source
B
carbon structure
C
carbon stand
D
carbon sink
15) Which below is a carbon source?
A
Cellular Respiration
B
Burning of fossil fuels
C
Decomposition
D
All of these are carbon sources.
16) Anything which stores more carbon than it releases is called a
A
carbon trap
B
carbon pit
C
carbon sink
D
carbon resource
17) Why are plants important in the carbon cycle?
A
They take carbon dioxide and produce energy.
B
They produce nitrates, which help with the breakdown of carbon dioxide.
C
They are the first step in getting carbon out of the atmosphere and into the carbon cycle.
D
The release ozone into the atmosphere, which helps with the breakdown of carbon dioxide.
18) How are humans influencing the amount of carbon in the carbon cycle?
A
By adding carbon dioxide to the atmosphere through photosynthesis.
B
By removing carbon dioxide from the atmosphere through cellular respiration.
C
Humans are not influencing the amount of carbon dioxide in the atmosphere.
D
By adding carbon dioxide to the atmosphere through the burning of fossil fuels.
19) What is the largest carbon sink on Earth?
A
Plants
B
Fossil Fuels
C
The Ocean
D
Permafrost
20) How does the ocean influence the amount of carbon dioxide in the atmosphere.
A
Taking carbon dioxide out of the atmosphere through diffusion.
B
All three are correct.
C
Taking carbon dioxide out of the atmosphere by phytoplankton to produce sugars through photosynthesis.
D
Releasing carbon dioxide back into the atmosphere.
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?