Domains and Kingdoms Notes
Three Domains
Domains are the highest and most general level of classification. All living things are divided
into three domains
1) Bacteria
2) Archaea
3) Eukarya
Domains Continued.
1) Bacteria- includes most types of bacteria

found everywhere

unicellular and prokaryotic (no nucleus)

heterotrophic (eat food) or autotrophic
(make own food)
2) Archaea- Bacteria that live in extreme conditions
Examples: Halophiles, Thermophiles, Methanogens
3) Eukarya- the largest domain which contains the
most number of kingdoms

Organisms are eukaryotic (has nucleus)

Can be unicellular or multicellular
Domains are broken down into 6 Kingdoms
1) Eubacteria
4) Fungi
2) Archaebacteria
5) Plantae
3) Protista
6) Animalia
1) Kingdom Eubacteria

Everyday bacteria
Ex: some E-coli

Most bacteria are eubacteria
bacteria can be found

Heterotrophic or autotropic

found everywhere

unicellular and prokaryotic
in the intestines
decomposing
undigested food or
other species on
uncooked meat
2) Kingdom Archaeabacteria

live in extreme conditions

have been on earth at least 3 billion years

archae comes from the Greek word "ancient"
3) Kingdom Protista

eukaryotic (has nucleus and organelles)

mostly unicellular

can contain organisms that are:
algae protists (plant-like)
4) Kingdom Fungi
fungus protists (fungus-like)
protozoa protists (animal like)

Mostly multicellular (cell walls made of chitin)
 Do not obtain nutrients by photosynthesis
 absorbs nutrients
 Decomposers
Some molds are used to
make medicine, like
penicillin
5) Kingdom Plantae

Multi-cellular (cell walls made of cellulose)

Carry out photosynthesis

Immobile (can't move)
6) Kingdom Animalia

Complex multi-cellular organisms

Mobile (can move)

Have specialized sense organs

Heterotrophic (can't make own food)

Eubacteria
Live in us, in the
soil, in water, etc.
Domain Bacteria
Fungi


Have cell walls
made of chitin
Decomposers
Complex
multicellular



Have cell walls
made of cellulose
Do not move
Animalia
Most can move and
have sense organs
Autotroph
only
Eukaryote
(has a nucleus)
Plantae
Eukaryote
(has a nucleus)
Heterotroph
only
Contains all
eukaryotes that are
not animals, plants
or fungi
Complex
multicellular

Eukaryote
(has a nucleus)
Autotroph or
heterotroph
Unicellular or
multicellular (simple)
Protista
Eukaryote
(has a nucleus)
Heterotroph
only
“ancient” bacteria
Live in extreme
environments
Unicellular or
multicellular (complex)


Prokaryote
(no nucleus)
Autotroph or
heterotroph
Unicellular
Archaebacteria
Prokaryote
(no nucleus)
Autotroph or
heterotroph
Unicellular
Domain Archaea