Across
- 6. explanation of the relationship between cells and living things
- 9. diffusion of water
- 10. process in which cell membrane engulfs a large particle
- 12. controls what substances pass into and out of a cell
- 14. cell's control center
- 15. fills region between the nucleus and cell membrane
- 16. powerhouse of cell
- 18. packages proteins and other materials
- 19. substance that cannot be broken down into simpler substance
Down
- 1. cell's recycling center
- 2. rigid layer that surrounds the cells of plants and some other organisms
- 3. fats
- 4. instrument that makes small objects larger
- 5. produce proteins
- 7. process that allows large particles to leave cell
- 8. protein that speeds up chemical reactions
- 11. sugars and starches
- 13. green organelle in plants
- 17. stores water,food, and other materials