Chapter 27 & 28

Prokaryotic Diversity

• Prokaryotes dated at 3.5 billion years old
• Modern Prokaryotes  are most abundant, lacking sexual reproduction

Domain Bacteria

• Proteobacteria
  • "true bacteria"
• Cyanobacteria
  • "Blue-Green bacteria"

Domain Archaea

• Have and "almost" nucleus
• specialized membranes
• surrounded by a cell wall
• old, can live in extreme conditions

Eukaryotic Diversity (Ch 28)

• Kingdom Protista
  • Earliest eukaryotes in fossil record
  • most are microscopic and found in moist environments
  • DNA many separate groups
  • Most artificial category
    • "catch-all" category

Subgroups

Algae

• Plant-like organisms
• 10 groups
• autotrophic (self-feeding)
  • most are photosynthetic
  • few ingest food
• cell wall with

Protozoans

• Animal-like
• mostly netraothrophic (food-eating)

Fungal-like Protist

• Mostly saprothrophic (absorb-feeding)
• mostly multicellular
• Slime Molds