1. Levels of Organization Mrs. Klakulak November 5, 2012 Bellwork: List the following Vocabulary words in order from largest to smallest: Organism, organ, Organ system, cells, tissue.

2. First the vocabulary: Tissue- a group of cells with similar structures, working together to perform a shared function. Organ- a structure made up of a group of tissues, working together to perform specific functions. Organ System- a group of organs with related functions, working together to perform body functions. (e.g. Digestion, Respiratory, Cardiovascular)

3. Lots of cells group together to make tissues!

4. Examples of Cells

5. Examples of Tissues

6. Examples of Organs

7. Examples of Organ Systems

8. Examples of Organisms

9. From an Atom to Ecosystem. http://www.youtube.com/watch?v=28ueTH q_fLwhttp://www.youtube.com/watch?v=28ueTH q_fLw

10. Ticket out the door Which structure listed below would be considered an organ? a) human being b) liver cell c) onion epidermis d) plant leaf