biology crossword

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Across
  1. 2. Powerhouse of the cell
  2. 3. Community of organisms and environment
  3. 4. Speeds up chemical reactions
  4. 6. Site of protein synthesis
  5. 7. Molecule carrying genetic instructions
  6. 11. Threadlike structure of DNA
  7. 12. Maintaining internal balance
  8. 14. Basic unit of life
  9. 15. Jelly-like substance inside cells
Down
  1. 1. Process plants use to make food
  2. 5. Organism that makes its own food
  3. 8. Organelle that holds DNA
  4. 9. Water movement across a membrane
  5. 10. Organism that eats others for energy
  6. 13. Change in species over time