Levels of Organization

Structure= the way something is

made…. “what it is”

Function= the job it (structure)

performs“what it does”

Cell

Cell= smallest unit of structure

and function for a living thing

Cell Ex: Bone Cell, Blood Cell, Nerve Cell, Skin Cell, Plant Cell

Tissue

Tissue= group of the same type of cells that perform

a specialized function

Tissue Ex: Skin Tissue,

Muscle Tissue, Bone Tissue

Organ

Organ= group of tissues that perform a specialized

function

Organ Ex: Brain, Stomach, Heart, Bone, Skin, Liver,

Leaf

Organ Systems

Organ System= group of organs that perform a

complex function

Organ System Ex: Digestive System,

Circulatory, Nervous, Skeletal

Organism

Organism= group of organ systems working together to make 1 living

thing

Population

Population= all the members of 1 kind

of organism (species) in a

particular area

Community

Community= all the populations living together in

an area (biotic factors)

Ecosystem

Ecosystem= the interaction of all

the biotic and abiotic factors in

an area

Biome

BIOME= Similar ecosystems on earth together

Biosphere

Biosphere= everywhere on Earth that living things can exist

Earth’s crust, oceans, lower level

of atmosphere

Levels of Organization

Levels of Organization

Levels of Organization