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

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