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