Across
- 4. The diffusion of water through the membrane
- 5. The process by which cells release energy from food
- 6. breaks down molecules from food to release energy
- 8. holds the cell together, and protects it
- 11. The diffusion of certain molecules through the cell membrane without help, no cell energy
- 13. a form of chemical energy
- 14. the process of building up larger molecules from smaller ones, when water and oxygen is stored
- 16. the cell’s control center
- 18. Carries food, waste products and hormones
- 19. Supports, protects and holds the body together
- 20. These structures help plants make their food.
- 23. a clear, jelly-like substance within a cell
- 25. When a cell reproduces by dividing its nucleus and forming two new cells
- 26. a gel-like substance containing water, salt, and nutrients obtained from food
- 27. thick strands that contain DNA
- 28. groups of cells that work together to do a certain job
Down
- 1. Coordinates body functions in addition to carrying messages to and from the brain and spinal cord
- 2. tiny pores or holes in the cell membrane that allow some molecules to diffuse into the cell
- 3. when molecules of a substance move from an area that is crowded to an area that is less crowded
- 7. Groups of tissues that work together to do a certain job
- 9. The chemical process in which cells receive nutrients for growth and reproduction
- 10. Covers and protects body surfaces and internal organs
- 12. structures inside a cell that float in the cytoplasm
- 15. Contracts, when stimulated, to produce motion
- 17. materials move from areas of high concentrations to low requiring energy
- 21. where food, water, and waste material is stored within a cell
- 22. the process of breaking down larger molecules into smaller ones, energy is released
- 24. forms cells that are not identical to the parent cell