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Carbon and Nitrogen Cycles

Description: carbon cycle #nitrogen cycle
Number of Questions: 13
Created by:
Tags: science
Attempted 0/13 Correct 0 Score 0

Which atoms are in fats, proteins, DNA, and carbohydrates? (Choose the most complete answer!)

  1. C, H, N, O

  2. C, H

  3. C, H, O

  4. C, H, N, O, S


Correct Option: C

What's SIMILAR about the carbon and nitrogen cycles?

  1. Animals gain both N and C through cellular respiration.

  2. Plants get both nitrogen and carbon from the air.

  3. Animals use consumption to get both N and C.

  4. Plants use photosynthesis to get both N and C.


Correct Option: C

What's true about atmospheric nitrogen?

  1. It has the formula N3.

  2. It is useful for plants as they grow.

  3. It is the second most abundant atmospheric gas after oxygen.

  4. It has to be fixed by bacteria in order to be useful.


Correct Option: D

What's the function of nitrogen-fixing bacteria?

  1. convert N2 into soil nitrogen

  2. convert carbon into nitrogen

  3. convert soil nitrogen into N2

  4. convert nitrate into nitrite


Correct Option: A

What's the function of denitrifying bacteria?

  1. convert N2 into soil nitrogen

  2. convert carbon into nitrogen

  3. convert soil nitrogen into N2

  4. convert nitrate into nitrite


Correct Option: C

What form of nitrogen is in the atmosphere?

  1. NO3 (nitrate)

  2. amino acids

  3. N2

  4. unicorns are pure nitrogen!


Correct Option: C

Which of these processes happen in aquatic ecosystems (like the ocean)?

  1. photosynthesis

  2. cellular respiration

  3. decomposition

  4. all of these


Correct Option: D

Which term describes the transfer of starch from a plant to a human?

  1. combustion

  2. consumption

  3. respiration

  4. photosynthesis


Correct Option: B

Which term describes the burning of fossil fuels?

  1. Combustion

  2. Consumption

  3. Deposition

  4. Respiration


Correct Option: A

Which organisms release carbon dioxide through ANAEROBIC cellular respiration?

  1. humans and bacteria that make yogurt

  2. humans and yeast

  3. yeast and plants

  4. all of these are correct


Correct Option: C

Where is carbon STORED?

  1. ocean

  2. atmosphere

  3. fossil fuels

  4. all of these are correct


Correct Option: D

How is decomposition involved in the carbon cycle?

  1. Things take in carbon dioxide as they decompose.

  2. Things release carbon dioxide as they decompose.

  3. Decomposition is always accompanied by photosynthesis.

  4. Decomposition isn't involved in the carbon cycle.


Correct Option: B

How does carbon move from nonliving to living things?

  1. cellular respiration

  2. dissolving

  3. photosynthesis

  4. combustion


Correct Option: C
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