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
NON-living

5. Organelles
“Tiny organs”
Made of macromolecules

6. Cells
Made of organelles
Basic unit of structure & function
LIVING

7. Tissues
The same kind cells working together
LIVING

8. Organs
Tissues that work together.
LIVING

9. Organ Systems
Organs that work together
LIVING

10. Organisms Entire living things Usually made of systems
May be a single cell
LIVING

11. Population
Same type of organism living together.

12. Community
Several populations living together
Populations 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. Cells Tissues Organs Organ Systems
Atom
Molecule
Macromolecule
Organelle
Cells
Tissues
Organs
Organ Systems
Organisms
Population
Community
Ecosystem
Biome
Biosphere