Levels of Organization

Organize these from smallest to largest

1.

2.

3.

4.

5.

1.

2.

3.

4.

5.

Cell

Tissue

Organ

Organ System

Organism

1. Cell: the smallest unit of life that is considered a living thing

1. Cell: the smallest unit of life that is considered a living thing

2. Tissue: a group of cells that work together and perform a function.

3. Organ: a group of similar tissues that work together to perform a function.

Some human organs are: heart, lungs, brain, stomach, and muscles.

4. Organ System: one or more organs that work together and perform one or more functions.

Some human organ systems are: skeletal system, muscular system, nervous system, cardiovascular system, digestive system, and the respiratory system

5. Organism: the most complex living thing. Organisms contain many organ systems that each have their own function, but depend on each other to help the organism function.

Write the levels of organization from smallest to largest:1.

2.

3.

4.

5.

http://ed.ted.com/on/qvjfQtIF

- All levels of organization need to function in order for the organism to be alive and healthy.

- If one level of the levels of organization fails, the organism would not function properly and would die.

Explain what you think would happen if an organism's cells stopped working.

Think - Ink - Pair - Share

Brainpop: Human Body

Foldable

CellTissue

Organ

Organ system

Organism

Muscle cell

Muscle Tissue

Stomach

Digestive SystemHuman