Across
- 2. nonliving particle that infects host cells
- 5. different form of a gene
- 9. segment of DNA that codes for a trait
- 10. cell division for growth and repair
- 12. protein that speeds up chemical reactions
- 13. organism that eats other organisms
- 16. diffusion of water across a membrane
- 17. organelle that makes proteins
- 18. change in a species over time
- 19. organelle for photosynthesis
- 21. trait that improves survival
- 23. community of organisms and their environment
- 24. process that converts sunlight into chemical energy
- 25. unicellular prokaryotes
Down
- 1. process where the best‑adapted survive and reproduce
- 3. basic unit of life
- 4. site of cellular respiration
- 6. organelle that stores DNA
- 7. organism that breaks down dead matter
- 8. movement of molecules from high to low concentration
- 11. molecule that carries genetic information
- 14. cell division that produces gametes
- 15. main energy molecule of the cell
- 20. maintaining internal balance
- 22. organism that makes its own food