Unit 3 Quiz Biogeochemical Cycles

22 Questions | Total Attempts: 2299

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Unit 3 Quiz Biogeochemical Cycles

Questions and Answers
  • 1. 
    Matter can recycle through the biosphere because
    • A. 

      Biological systems do not use up matter, they transform it.

    • B. 

      Matter is passed out of the body as waste.

    • C. 

      Biological systems use only carbon, oxygen, hydrogen, and nitrogen.

    • D. 

      Matter is assembled into chemical compounds.

  • 2. 
    Organisms need nutrients in order to
    • A. 

      Carry out essential life functions.

    • B. 

      Recycle chemical compounds.

    • C. 

      Utilize hydrogen and oxygen.

    • D. 

      Carry out nitrogen fixation.

  • 3. 
    Which of the following is NOT recycled in the biosphere?
    • A. 

      Nitrogen

    • B. 

      Carbon

    • C. 

      Energy

    • D. 

      Water

  • 4. 
    Humans put fertilizer on fields in able to grow stronger, healthier crops. On which cycle would this have the largest impact?
    • A. 

      Carbon

    • B. 

      Water

    • C. 

      Nitrogen

    • D. 

      All of the answer choices are correct

  • 5. 
    Humans use fossil fuels to provide energy for automobiles and factories. On which cycle would this have the largest impact?
    • A. 

      Carbon

    • B. 

      Water

    • C. 

      Nitrogen

    • D. 

      All of the answer choices are correct

  • 6. 
    Which process is a major part of both the carbon cycle and the nitrogen cycle?
    • A. 

      Denitrification

    • B. 

      Decomposition

    • C. 

      Cellular respiration

    • D. 

      All of the answer choices are correct

  • 7. 
    What process removes carbon dioxide from the atmosphere?
    • A. 

      Decomposition

    • B. 

      Combustion

    • C. 

      Photosynthesis

    • D. 

      Cellular respiration

  • 8. 
    Which process converts nitrogen in the form of nitrates and ammonia into nitrogen gas to be released into the atmosphere?
    • A. 

      Decomposition

    • B. 

      Denitrification

    • C. 

      Nitrogen fixation

    • D. 

      Transpiration

  • 9. 
    What organisms are responsible for the removal of carbon dioxide from the atmosphere?
    • A. 

      Animals

    • B. 

      Bacteria

    • C. 

      Plants

    • D. 

      Fungi

    • E. 

      All of the answer choices are correct

  • 10. 
    How is carbon stored in the biosphere?
    • A. 

      In the atmosphere as carbon dioxide

    • B. 

      In the oceans as dissolved carbon dioxide

    • C. 

      Underground as fossil fuels and calcium carbonate rock

    • D. 

      All of the answer choices are correct

  • 11. 
    Carbon cycles through the biosphere in all of the following processes EXCEPT
    • A. 

      Transpiration.

    • B. 

      Decomposition of plants and animals.

    • C. 

      Photosynthesis.

    • D. 

      Burning of fossil fuels.

  • 12. 
    Which of the Which of the following accurately explains the role of legumes in the nitrogen cycle?
    • A. 

      Legumes are a type of nitrogen-fixing bacteria.

    • B. 

      Nitrogen-fixation occurs in the leaves of legumes.

    • C. 

      Legumes use up the nitrogen found in the soil to make proteins.

    • D. 

      Nitrogen-fixing bacteria live within structures in the roots of legumes.

  • 13. 
    Assume burning 1 kg of organic plant material (biomass) as fuel releases the same amount of carbon dioxide (CO2) as burning 1 kg of fossil fuels. Why would burning biomass instead of fossil fuel keep the amount of CO2 in the atmosphere relatively stable?
    • A. 

      Sunlight breaks down the gases released by burning biomass before they reach the atmosphere.

    • B. 

      Gases released by burning biomass contain more environmental pollutants than the gases released by burning fossil fuels.

    • C. 

      Plants capture CO2 during photosynthesis and release it when they are burned as biomass.

    • D. 

      CO2 released by burning biomass is from a natural source and does not affect the atmosphere.

  • 14. 
    What organisms are responsible for returning carbon dioxide to the atmosphere?
    • A. 

      Fungi

    • B. 

      Animals

    • C. 

      Bacteria

    • D. 

      Plants

    • E. 

      All of the answer choices are correct

  • 15. 
    Which of the following processes is NOT part of the water cycle?
    • A. 

      Precipitation

    • B. 

      Condensation

    • C. 

      Decomposition

    • D. 

      Transpiration

  • 16. 
    What process releases carbon dioxide into the atmosphere?
    • A. 

      Combustion

    • B. 

      Cellular respiration

    • C. 

      Decomposition

    • D. 

      All of the answer choices are correct

  • 17. 
    Which pair of processes involves the use of bacteria?
    • A. 

      Evaporation and transpiration

    • B. 

      Photosynthesis and cellular respiration

    • C. 

      Nitrogen fixation and denitrification

    • D. 

      All of the answer choices are correct

  • 18. 
    Burning, lightning strikes, and legumes all play an important role in the nitrogen cycle by helping remove nitrogen gas from the atmosphere and converting it into a usable form for plants. What is this process called?
    • A. 

      Transpiration

    • B. 

      Nitrogen fixation

    • C. 

      Denitrification

    • D. 

      Decomposition

  • 19. 
    Evaporation is the process of liquid water changing into a water vapor. Transpiration is a type of evaportation from which of these organisms?
    • A. 

      Fungi

    • B. 

      Plants

    • C. 

      Animals

    • D. 

      Bacteria

  • 20. 
    Which pair of processes are parts of the carbon cycle?
    • A. 

      Nitrogen fixation and denitrification

    • B. 

      Photosynthesis and cellular respiration

    • C. 

      Evaporation and transpiration

    • D. 

      All of the answer choices are correct

  • 21. 
    Nitrogen fixation is carried out primarily by
    • A. 

      Humans.

    • B. 

      Consumers.

    • C. 

      Bacteria.

    • D. 

      Plants.

    • E. 

      Fungi.

  • 22. 
    Why are scientists concerned about the impact humans have on the carbon cycle?
    • A. 

      Scientists think that we are contributing too much CO2 to the atmosphere, which could result in global climate change.

    • B. 

      Scientists think that we may use up all naturally occuring sources of carbon, which could result in a lack of readily available fuel sources.

    • C. 

      Scientists think that the amount of greenhouse gases that we are contributing to the atmosphere could be resulting in an increase of disease outbreaks.

    • D. 

      Scientists think that if we continue to burn fossil fuels at the current rate, all plant life on the planet could die.

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