Across
- 3. developed the microscope
- 4. cells with NO nucleus
- 6. increase in size
- 8. chemical reactions inside the cell
- 11. perceiving and responding to changes in the environment
- 12. cells with a nucleus
- 13. states all organisms are composed of cells
Down
- 1. keeping conditions inside the organism within tolerable limits
- 2. obtaining food to provide energy for growth
- 5. smallest structural and functional unit of an organism
- 7. discovered cells
- 9. protection against enemies
- 10. producing offspring