The nitrogen cycle

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1. What are Chemoautotrophs?

  • Organisms that makes its own organic compounds by using energy from chemical reactions
  • Chemicals that naturally exist
  • Automatic chemical eaters
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Other questions in this quiz

2. Denitrification bacteria turn nitrate to nitrogen gas .....

  • True
  • False

3. How do plant roots absorb nitrate (NO3)?

  • Magic!
  • Osmosis
  • Active transport
  • Facilitated diffusion

4. How does decomposers break down dead matter?

  • Magic!
  • Extracellular digestion
  • They don't
  • Extracellular ingestion

5. All nitrogen ends up as non living organic molecules ....

  • True
  • False

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