Across
- 4. Where plant cells divide
- 6. Type of cell that can change into others
- 10. Chemical found in a synapse
- 12. Cells with 23 pairs of chromosomes
- 13. The connection between 2 neurones
- 14. _______ sheath – insulates the axon
Down
- 1. Cells becoming specialised
- 2. Type of graph allowing growth to be compared
- 3. Stage in the cell cycle where cells split
- 5. Stage in the cell cycle where DNA is copied
- 7. Central _________ System
- 8. Another name for a nerve cell
- 9. Cells with 23 single chromosomes
- 11. A response that does not use the brain