All known organisms belong to one of 3 domains

Bacteria

Archaea

Eukarya

Each domain is made up of at least 1 kingdom ◦ Domain Bacteria

Kingdom Bacteria

◦ Domain Archaea

Kingdom Archaea

◦ Domain Eukarya

Kingdom Animalia

Kingdom Plantae

Kingdom Fungi

Kingdom Protista

Cell Type Prokaryotic (Cells do

not have a nucleus) Most have a cell wall

Cell Number Unicellular (made of a

single cell) Ability to Make Food

Some are autotrophic (photosynthesis)

Some are heterotrophic (“eat”)

Salmonella

Lactobacillus

E. Coli

Spirilla

Cocci

Cell Type Prokaryote (Cells do

not have a nucleus) Most have a cell wall

Cell Number Unicellular (made of a

single cell) Ability to Make Food

Some are autotrophic (chemosynthesis)

Some are heterotrophic (“eat”)

The differences are small but important:

Structural differences in the cell wall

Chemosynthesis instead of photosynthesis

The environment in which they live

“Extremophiles”

Hot pots

Undersea vents

Salty

Methanogen

Halobacter

Desulforudis audaxviator

Cell Type

Eukaryotic (has a nucleus)

Does not have a cell wall

Cell Number

Multicellular (made of many cells)

Ability to Make Food

All are heterotrophic (“eat”)

Mammals

Insects/Arachnids

Fish

Annelids

Birds

Cell Type

Eukaryotic (has a nucleus)

Has a cell wall

Cell Number

Multicellular (made of many cells)

Ability to Make Food

All are autotrophic (photosynthesis)

Flowering Plants

Seedless Plants

Nonvascular Plants

Cell Type Eukaryotic (has a

nucleus) Has a cell wall but is

chemically different from plants and bacteria

Cell Number Some multicellular

(made of many cells) and some unicellular (single celled)

Ability to Make Food All are heterotrophic

(“absorption”)

Mushrooms

Athlete’s Foot

Blue Cheese

Yeast

Mold

Cell Type Eukaryotic (has a

nucleus) Some have a cell wall

some do not have a cell wall

Cell Number Some multicellular (made

of many cells) and some unicellular (single celled)

Ability to Make Food Some are autotrophic

(photosynthesis) Some are

heterotrophic (“eat”)

Euglena

Seaweed

Amoeba

Volvox

Kingdom Cell Type Cell Number Food

Bacteria Prokaryotic. Most

with a cell wall Unicellular

Autotrophic (photosynthesis)

and Heterotrophic

Archea Prokaryotic. Most

with a cell wall Unicellular

Autotrophic (chemosynthesis)

and Heterotrophic

Animalia Eukaryotic Multicellular Heterotrophic

Plantae Eukaryotic with a

cell wall Multicellular Autotrophic

(photosynthesis)

Fungi

Eukaryotic with a cell wall

(different from plant cell wall)

Multicellular and unicellular

Heterotrophic (absorption)

Protista Eukaryotic. Some with a cell wall

Multicellular and unicellular

Autotrophic (photosynthesis)

and Heterotrophic