Levels of Organization

Due Today:  Cell Organization homework sheet

Warm-up: Put these items in order from biggest to smallest.  For extra credit add even bigger or smaller items to your list!

• atom
• cell
• compound
• DNA
• ecosystem
• element
• electron
• galaxy
• nucleus
• organ
• organ system
• organism
• a protein
• planet
• solar system
• tissue

Then, revise your list after you watch a bit of Cosmic Voyage   .

Review your cell parts and check out  www.cellsalive.com