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