Beginning of Life

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Across
  1. 2. microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles
  2. 8. a hot mix of gases and solids, the surface was molten, atmosphere formed mainly from gases spewed from volcanoes
  3. 10. an organism that cannot produce its own food
  4. 11. atmosphere in primitive earth in which hydrogen is present, but not oxygen
  5. 13. theory that suggests the first cells were likely heterotrophic and fed on organic molecules that had been made without cells; relied on fermentation
  6. 15. theory that eukaryotic cells may have evolved when multiple cells joined together into one
Down
  1. 1. organisms whose cells have a nucleus
  2. 3. an organic molecule such as RNA inside a lipid membrane
  3. 4. an organism that can produce its own food
  4. 5. proposed heterotrophic theory
  5. 6. provided the first evidence that organic molecules needed for life could be formed from inorganic components
  6. 7. homeostasis, reproduction, metabolism, reproduction, metabolism, DNA/Heredity
  7. 9. type of atmosphere which oxidizes immersed compounds
  8. 12. discovered that by splashing amino acids under hot, dry conditions caused them to instantly polymerize into proteins
  9. 14. published a hypothesis on the origin of life on earth, describing the progressive evolution of matter on the primitive earth and the emergence of life