Sulfur%20Biochemical%20Cycle

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Sulfur Biochemical Cycle

• By
• Andrew Cerrina
• Ray-Ray Chi
• Jo-Hannnah Chong
• Mambok Lee

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Where Sulfur is Found on Earth
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KEY TERMS

• SO2 Sulfur Dioxide Gas
• H2S Hydrogen Sulfide Gas
• SO4 Sulfate Compound

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Source

• Sulfur originates in the Earths lithosphere

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Sulfur Dioxide

• Less than 1 of atmosphere
• Found in atmosphere from volcanoes and industrial
  activity
• Compounds fall or are rained out of atmosphere
• Plants take in forms of this compound and absorb
  into tissues

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• After plants die or are consumed by animals,
  organic sulfur compounds are returned to land or
  water

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Bacteria

• Can transform organic sulfur to hydrogen sulfide
  gas

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Oceans

• Some phytoplankton produce chemicals that
  transform to SO2
• Gases produced re-enter the atmosphere, water,
  soil
• Continues cycle

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Lifetime

• Very short
• Used up in days

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Biological and Ecological Effects

• Sulfur is a vital ingredient to proteins
• Plants take sulfur compounds out of water
• Some animals are dependent on plants that absorb
  sulfur

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• If too much sulfur is found in the air,
  possibility of acid rain!!!!!!

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Carbon, the key elemefe on earth, has a
complicated biogeochemical cycle of great
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Works Cited

• http//essp.csumb.edu/esse/climate/climatebiogeo.h
  tml
• www.geo.uu.nl/Research/Geochemistry/jack/SCycle.pp
  t
• filebox.vt.edu/users/chagedor/biol_4684/Cycles/Scy
  cle.html