BAZINGA!

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Across
  1. 2. Neutrally charged particle in an atom’s nucleus
  2. 5. Basic unit of life
  3. 6. Chemical messenger in the body
  4. 7. Control center of a cell containing genetic material
  5. 10. Change in the DNA sequence
  6. 12. Mountain that erupts with lava
  7. 15. Process of maintaining stable internal conditions
  8. 16. Different forms of a gene
  9. 17. Protein that helps the immune system fight infections
  10. 18. Gap between neurons where signals are transmitted
  11. 19. Variety of life in a particular habitat or ecosystem
Down
  1. 1. Instrument used to observe distant objects in space
  2. 3. A community of living organisms and their environment
  3. 4. Complete set of an organism’s genetic material
  4. 8. Organelle where photosynthesis occurs in plants
  5. 9. Organelle that synthesizes proteins
  6. 10. Cell division process resulting in two identical cells
  7. 11. Process plants use to make food
  8. 13. Basic unit of matter
  9. 14. Force that attracts objects towards Earth