1. Domains and Kingdoms Ch. 19 Sect. 1

2. 3 Domains of Life Domain Bacteria Domain Archea Domain Eukarya
thought to be the oldest
composed of the kingdom Eubacteria
Domain Archea
composed of the kingdom Archaebacteria
Domain Eukarya
composed of 4 kingdoms:
Kingdom Protista
Kingdom Fungi
Kingdom Plantae
Kingdom Animalia

4. The Three Domains of Life

6. Kingdom Eubacteria Characteristics: coccus bacillius spirillum
Prokaryotic (no nucleus)
Unicellular
Have strong cell walls made of peptidoglycan
Amino acid sequences are very different from archaebacteria and eukaryotes
May be photosynthetic or heterotrophic (can’t make own food)
Found in every environment on Earth
Some cause disease
Some are used to process food
Others used to control pests, perform genetic engineering
coccus
bacillius
cyanobacteria
spirillum

7. Kingdom Archaebacteria
Characteristics:
Prokaryotic
Unicellular
Cell walls do not contain peptidoglycan
Proteins are similar to eukaryotes but not eubacteria
Methanogens
Obtain energy from H2 and CO2 to form methane (CH4)
Live deep in mud swamps and are poisoned by oxygen
Extremophiles
Thermophiles live in very hot places (up to 106°C = 228°F)
Halophiles live in very salty lakes
Others live in very acidic environments
Nonextreme Archaebacteria
Live in same environments as eubacteria

8. Kingdom Protista Characteristics: Eukaryotic (have nucleus)
Mostly unicellular but some multicellular
May be autotrophic or heterotrophic
Some have cell walls
Many move by flagella, cilia or pseudopods
Reproduce asexually
Mostly aquatic (live in freshwater and saltwater environments)

9. Kingdom Fungi Characteristics: Eukaryotic Multicellular Heterotrophic
except yeasts = unicellular
Heterotrophic
Cells walls made of chitin
Asexual and sexual reproduction
Don’t move from place to place
Many live on dead organisms
Others are parasites
Include mushrooms, molds, and yeasts

10. Kingdom Plantae Chracteristics: Eukaryotic Multicellular
Photosynthetic
Don’t move from placeto place
Plants cover every part of the earth except the polar regions and highest mountaintops
Have specialized cells
Cell walls composed of cellulose

11. Kingdom Animalia Characteristics: Eukaryotic Multicellular
Heterotrophic
No cell walls
Capable of movement
Found in many different environments
Invertebrates and vertebrates
Mostly sexual reproduction