Across
- 3. group of organs work together
- 6. removes large substances
- 9. diffuse through protein doorways
- 10. several organs work together
- 11. requires energy
- 16. moves across protein channels
- 17. uses pseudopods
- 18. requires no energy
- 19. equal amount on both sides
- 20. group of cells work together
- 21. primary energy
Down
- 1. brings substances into the cell
- 2. one cell
- 4. diffusion of water
- 5. two or more tissues work together
- 7. diffusion
- 8. Many cells
- 12. binds to specific sites
- 13. fluid dissolve through membrane
- 14. most basic unit of any living thing
- 15. goes through membrane easily