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Chapter 27 &28
Prokaryotic Diversity
- Prokaryotes dated at 3.5 billion years old
- Modern Prokaryotes are most abundant, lacking sexual reproduction
Domain Bacteria
- Proteobacteria
- Cyanobacteria
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
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