Across
- 3. Hooke looked at this from the bark of a tree.
- 6. Cells are up to 1000 times smaller than human cells.
- 8. Hooke said the cork looked like it had tiny ____.
- 9. Who was the first person to describe cells?
- 10. The smallest structural & functional unit of an organism.
Down
- 1. Plant cells can be much larger than _____ cells.
- 2. In 1665 Hooke built a ____ to see tiny things.
- 4. The cell's surface takes in nutrients & pumps out _____.
- 5. Carries out its own life processes.
- 7. How many cells do humans have?