Across
- 2. cell organelles with digestive enzymes
- 4. generates ATP for cell energy
- 5. study of birds
- 9. study of body forms
- 12. structures left over that no longer function
- 14. study of microscopic animals
- 16. large cell with a nucleus
- 18. different structures with the same function
- 19. cell organelles that make proteins
Down
- 1. 3 statements explaining our understanding of cells
- 3. organism with a backbone
- 6. shows evolutionary relationships between animals
- 7. study of reptiles and amphibians
- 8. study of animals
- 10. outer covering of all cells
- 11. no backbone
- 13. similar structures that function differently
- 14. cell with no nucleus
- 15. study of DNA and inherited traits
- 17. trait that helps in survival