Chemosynthetic theory

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Chemosynthetic theory

  1. 1. groupthreepresents...<br />THE<br />Chemosynthetic Theory<br />How did life metamorphose from CHEMICAL REACTIONS ?<br />
  2. 2. “Life is the cumulative product of interactions among the many kinds of chemical substances that make up the cells of an organism.”<br />-Neil A. Campbell<br />
  3. 3. At first, it seems unbelievable that life is made through a series of chemical reactions…<br />
  4. 4. Scientists have developed a theory that describes how the very first microscopic life could have evolved as a result of a <br />SERIES OF CHEMICAL REACTIONS.<br />This is the<br />chemosynthetic<br />theory<br />
  5. 5. ammonia<br />phosphate<br />nitrogen<br />carbon<br />ammonia<br />Hydrogen gas<br />methane<br />Water vapor<br />
  6. 6. The Chemosynthetic Theory<br />Chemosynthesis <br />can be divided into <br />six stages.<br />
  7. 7. THE FIRST PHASE<br />Random molecules form simple organic molecules with energy provided by the sun.<br />STANLEY MILLER<br />Hydrocarbon chains<br />
  8. 8. The Miller-Urey Experiment<br />
  9. 9. THE SECOND PHASE<br /> The simple organic molecules formed in the 1st stage bond to create major organic macromolecules.<br />Peptides and proteins<br />Amino acids<br />They combine…<br />sugars<br />hydrocarbons<br />Fat molecules<br />They form starches & other complex sugars<br />carbohydrates<br />They unite…<br />
  10. 10. THE THIRD PHASE<br /> Development of aggregates of molecules, called coacervates. <br />They are theorized to have been the early ancestors of cells ! :o<br />The macromolecules are organized into bodies of definite shape, unity and properties which resemble those of living things.<br />
  11. 11. THE 4th, 5th and 6th PHASE<br />Nucleic Acids appear and help in the development of the coacervates.<br />Nucleic acids<br />There is an improvement in organization of the coacervates.<br />It shows the beginning of evolutionary development.<br />AUTOTROPHIC BACTERIA APPEARS…<br />LIFE HAS ARISEN !<br />
  12. 12. TWO MAIN DIFFICULTIES<br />The described transition from chaos to organization<br />how did a bunch of chemical elements transform into organized living forms? <br />• The appearance of enzymes<br />how did enzymes come into existence? <br />THEY ARE STRUCTURES THAT ARE EXTREMELY TASK-SPECIFIC.<br />The Chemosynthetic Theory is still basically impossible to conclusively prove.<br />
  13. 13. group<br />three<br />DE LA PEŃA ALMARIO<br />GUIAM BASCUŃA<br />LINSAG DOMINGO <br />MANUEL LO <br />SISON ZOLETA<br />

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