Across
- 3. oxygen
- 4. chromosomes
- 7. selectively permeable
- 8. have many cells
- 10. evolution
- 12. ___________reticulum
- 14. brain of cell
- 16. dna
- 18. nutrients
- 19. water
- 20. animals
Down
- 1. smooth balloon like
- 2. smooth sausage shape contain chlorophyll
- 5. have single cell
- 6. membrane of the nucleus
- 9. jelly like fills space in cell
- 11. blood
- 13. cells
- 15. ___________organisms
- 17. thick rigid layer around cell membrane