chapter 14

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Author:
chrislchs19
ID:
136866
Filename:
chapter 14
Updated:
2012-02-21 21:29:55
Tags:
evolution
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Description:
evolution
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  1. radiometric dating
    method of establishing the age of a material
  2. mass number
    the mass number of an isotope is the total number of protons and neutrons in the nucleus
  3. radioactive decay
    the nucleus releases particles or radiant energy until the nuclei become stable.
  4. radioactive isotopes
    isotopes that undergo radioactive decay are known as radioactive isotopes
  5. half-life
    the length of time it takes for half of the isotope to decay to stable form
  6. microspheres
    spherical in shape and composed of many protein molecules.
  7. coavervates
    collections of droplets that are composed of molecules of different types, including lipids, amino acids and sugars.
  8. ribozyme
    molecule that acts as a catalyst and promotes a specific chemical reaction
  9. archaea
    a related group of unicellular organisms, many of which can thrive under harsh enviroments
  10. chemosynthesis
    autotrophs recieve energy through chemosynthesis instead of photosynthesis
  11. ozone
    a layer of which collects uv rays to protect plant and animal life

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