| Across |
| 2. | Controlls what enters and leaves, protects and supports |
| 3. | Membran-enclosed saclike structures that store water, salts, and organic molecules |
| 7. | Only in the plant cell! Photosynthesis |
| 10. | Cell that dont have a nucleus |
| 12. | solution have a higher concentration |
| 14. | chemcal singal |
| 15. | a network of protein filaments; it helps the cell maintain its shape |
| 17. | are water channels proteins that allow water to pass throught the cell membrane |
| 18. | small particles of RNA and protein, they produce proteins by following coded instructions from DNA |
| 19. | organelles made from tubulins |
| 21. | is the process by which molecules that cannot directly diffuse across the membrane pass throught speacial protein channels |
| 23. | support shape and protects the cell. |
| 24. | it modifies, sorts,and oackages protein and other materials from the ER for storage in the cell opr release outsid ethe cell |
| 25. | allowing some substance, but not others to pass across them |
| 29. | relatively constant internal conditions |
| 30. | is a group of organs that work together to perform a specic function |
| 31. | converts the chemical energy stored in food to usable form |
| 33. | Basic unit of life |