Across
- 4. present in all living organisms
- 6. threadlike structure that contains proteins
- 9. Single-celled organism
- 10. segments of dna
- 11. membrane-bound organelle
Down
- 1. a theory that has 3 reasons for cells
- 2. an organelle that synthesizes proteins
- 3. consists of one cell
- 5. structure inside the cell that has a function
- 7. an organism with many organelles
- 8. jelly-like material found in every cell
- 12. basic building block of life