Across
- 6. Who was the first scientist to observe and name the cell?
- 7. smallest unit of any living thing
- 9. control center of a cell; stores DNA
- 12. the most important organelles in cells; where respiration occurs
- 13. passing of characteristics from parent to offspring
Down
- 1. layer of earth's surface where the life exists
- 2. "little organ" within the cell where chemical reactions occur
- 3. study of living things
- 4. jelly-like substance within the cell
- 5. who is the source of life?
- 7. barrier that surrounds and protects the cell
- 8. the layer of Earth's surface where life exists
- 10. what is stored in the nucleus of a cell
- 11. living thing