The Carbon And Nitrogen Cycle Question Preview (ID: 35143)
Review Questions For The Carbon And Nitrogen Cycle Test.
TEACHERS: click here for quick copy question ID numbers.
Which below does NOT describe nitrogen?
a) It is an element.
b) Most organisms can get the nitrogen they need from the atmosphere.
c) All living things need nitrogen to build proteins and other important body chemicals.
d) It makes up about 78% of the gasses in our atmosphere.
Nitrogen which is not combined with any other element is
a) released nitrogen
b) uncombined nitrogen
c) isotope nitrogen
d) free nitrogen
What must happen to free nitrogen before organisms can use it?
a) It must combined with other elements to create nitrogen compounds.
b) It must combined with moisture in the atmosphere.
c) It must be separated by lightning.
d) It must be converted into sugars by plants.
What is the nitrogen cycle?
a) A bicycle made of nitrogen.
b) A special setting on a washing machine to help clean nitrogen compounds.
c) The path free nitrogen takes from the atmosphere, to living organisms, and back into the atmosphere.
d) Both A and B are correct.
Which way can nitrogen be fixed?
a) By lightning
b) By plants
c) By certain types of bacteria.
d) Both A and C are correct.
Where are nitrogen fixing bacteria NOT located?
a) Inside the structures on the roots of certain plants called legumes
b) In the water.
c) In the soil.
d) In the atmosphere.
Which below is not an example of a legume.
a) Beans
b) Potatoes
c) Peas
d) Peanuts
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.
What happens to the nitrogen in animal waste or decomposing organisms.
a) It is released into the atmosphere.
b) It is returned to the soil in the form of ammonia.
c) It is released into the ground water in the form of carbohydrates.
d) It is returned to plants in the form of free nitrogen.
Which below is NOT a step in fixing free nitrogen into usable nitrogen.
a) Nitrates are converted into carbohydrates through photosynthesis.
b) Free nitrogen is converted into ammonium.
c) Ammonium is converted into nitrites.
d) Nitrites are converted into nitrates.
Which below is NOT true about carbon.
a) It is an element.
b) Inorganic (carbon dioxide) or organic (sugar).
c) It is the basis for all living things.
d) It can only be found in its pure form.
The process by which plants take carbon dioxide, water and energy from the sun to produce sugars and oxygen.
a) Transpiration
b) Cellular Respiration
c) Photosynthesis
d) Oxygen Fixing
The process by which an organism takes sugar, combines it with oxygen to produce carbon dioxide, water vapor and energy.
a) Cellular Respiration
b) Photosynthesis
c) Oxygen Diffusion
d) Transpiration
Anything which releases carbon dioxide into the atmosphere is considered a
a) carbon sink
b) carbon stand
c) carbon structure
d) carbon source
Which below is a carbon source?
a) Cellular Respiration
b) Decomposition
c) Burning of fossil fuels
d) All of these are carbon sources.
Anything which stores more carbon than it releases is called a
a) carbon resource
b) carbon sink
c) carbon pit
d) carbon trap
Why are plants important in the carbon cycle?
a) They are the first step in getting carbon out of the atmosphere and into the carbon cycle.
b) They produce nitrates, which help with the breakdown of carbon dioxide.
c) They take carbon dioxide and produce energy.
d) The release ozone into the atmosphere, which helps with the breakdown of carbon dioxide.
How are humans influencing the amount of carbon in the carbon cycle?
a) By removing carbon dioxide from the atmosphere through cellular respiration.
b) By adding carbon dioxide to the atmosphere through the burning of fossil fuels.
c) By adding carbon dioxide to the atmosphere through photosynthesis.
d) Humans are not influencing the amount of carbon dioxide in the atmosphere.
What is the largest carbon sink on Earth?
a) Fossil Fuels
b) The Ocean
c) Plants
d) Permafrost
How does the ocean influence the amount of carbon dioxide in the atmosphere.
a) Taking carbon dioxide out of the atmosphere by phytoplankton to produce sugars through photosynthesis.
b) Taking carbon dioxide out of the atmosphere through diffusion.
c) Releasing carbon dioxide back into the atmosphere.
d) All three are correct.
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 35143 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 35143 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register