Chapter 4 Key Terms

• p. 68: Hadean eon, panspermia
  
• p. 69: geochemists, reducing atmosphere, oxidizing atmosphere, ultraviolet radiation, ozone
  
• p. 70: ribozymes
  
• p. 73: cells, metabolism, photosynthesis, coacervates, proteinoid microspheres
  
• p. 74: microdrops, prevital, silicate clays, kaolinite
  
• p. 75: protocells, protobionts, micelles, liposomes, primary abiogenesis
  
• p. 76: microfossils, bacteria, prokaryotes, nucleus (plural, nuclei), eukaryotes, stromatolites, archaebacteria, anaerobically, peptidoglycan
  
• p. 77: halophiles, thermophiles, eubacteria, cyanobacteria
  
• p. 78: Pelomyxa, endosymbiotic theory
  
• p. 79: multicellularity, taxonomy, Kingdom Archaea, Kingdom Monera, Kingdom Protista, Kingdom Fungi, Kingdom Plantae
  
• p. 80: Kingdom Animalia