1. Levels of Organization

2. ATOMS
• Smallest part of matter
• NON-living

3. Molecules
• 2 or more bonded atoms
• Form compounds
• NON-living

4. Macromolecule
• Very large molecules
• Proteins, fats, carbohydrates, nucleic
acids
• NON-living

5. Organelles
• “Tiny organs”
• Made of macromolecules

6. Cell
• Made of organelles
• Basic unit of structure & function
• LIVING

7. Tissue
• The same kind cell working together
• Living

8. Organs
• Tissues that work together
• Living

9. Systems
• Organs that work together
• Living

10. Organism
• Entire living things
(organisms)
• Usually made of
systems
• May be a single cell
• Living

11. Population
• Same type of
organism living
together

12. Community
• Several populations living together
• Population interact

13. Ecosystem
• A biotic (living) community plus the
abiotic (nonliving) features

14. Biome
• Similar ecosystems on earth together

15. Biosphere
• Whole living layer around the globe
• Includes abiotic features
http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html

16. Atom
Molecule
Macromolecule
Organelle
Cell
Tissue
Organ
System
Organism
Population
Community
Ecosystem
Biome
Biosphere