The Biosphere Set 2

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This set of The Biosphere Multiple Choice Questions & Answers (MCQs) focuses on The Biosphere Set 2

Q1 | Organisms need nutrients in order to
  • utilize hydrogen and oxygen.
  • carry out essential life functions.
  • recycle chemical compounds.
  • carry out nitrogen fixation.
Answer: carry out essential life functions.
Q2 | The movements of energy and nutrients through living systems are different because
  • energy flows in one direction and nutrients recycle.
  • energy is limited in the biosphere and nutrients are always available.
  • nutrients flow in one direction and energy recycles.
  • energy forms chemical compounds and nutrients are lost as heat.
Answer: energy flows in one direction and nutrients recycle.
Q3 | Biogeochemical cycling ensures that
  • human activity will have no effect on elements, chemical
  • c compounds, and other forms of matter. living organisms will not become limited in any one nutrient. nutrients will be circulated throughout the biosphere.
  • nutrients will be circulated throughout the biosphere.
  • many nutrients will not reach toxic concentrations in the biosphere.
Answer: nutrients will be circulated throughout the biosphere.
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