Across
- 3. several kinds of tissues that work together to make a function
- 5. organism too small to see with unaided eye
- 8. control center of cell
- 9. fluid that fills cell
- 11. tough,flexible membranr around some cells
- 12. structure of all living things
Down
- 1. make food for the cell
- 2. the form of a body part
- 4. has one cell
- 6. has many cells
- 7. a living thing
- 10. what a structure does