The Organization of Life Science 7

Cell Organization of Life Tissue Organ Organ System Organism

Cell The basic structural and functional unit of life Basic building block of life Examples: Skin cells Brain cells Red blood cells

Tissue A group of similar cells that work together to perform a specific function in the body

Organ A combination of two or more tissues that work together to perform a specific function in the body.

Organ System A group of organs working together to perform body functions

Organism Anything that can live on its own A system with many parts that depend on each other and work together

Organ System Tissue Organ Organism Cell

Organization of Life Continued Ecosystem Community Population Organism

Organism Anything that can live on its own Examples: A bunny A tree A butterfly bacterium

Population A group of the same kind of organisms that live in the same area Examples: A family of bunnies A group of tress A bunch of butterflies

Community 2 or more populations living in the same area at the same time Example: All of the bunnies, trees, and butterflies that live in the same forest

Ecosystem The community and all the nonliving things that affect it What are some nonliving things? Rocks, sunlight, water