Across
- 3. hollow, microscopic tube which helps maintain a cell's shape
- 6. positively charged particle
- 8. the tiny building blocks that make up matter
- 12. subcellular structure which performs one or more specific tasks
- 14. organelle which performs photosynthesis in a cell
- 15. the largest organelle in most eukaryotic cells
- 17. number of protons in an atom
- 19. a group of atoms joined in a specific way
Down
- 1. space or cavity in a cell which stores food, water, waste, etc.
- 2. the part of a cell which contains chromosomes
- 4. total mass of an atom
- 5. extremely tiny piece of matter
- 7. small organelle which helps make proteins
- 9. oval-shaped organelle which produces energy inside the cell
- 10. anything that takes up mass and space
- 11. negatively charged particle
- 13. no charged particle
- 14. surrounds some type of cells
- 16. molecule which contains genetic code
- 18. smallest unit of life that can live on its own