Across
- 2. the system that removes wastes from the blood and regulates body fluids
- 4. a group of similar cells working together
- 5. the macromolecule that speeds up chemical reactions and helps with transport, communication, defense, and structure
- 6. two or more tissues working together
- 8. the system that sends electrical signals
- 10. when the inside of an organism is stable or approximately the same at all times
- 12. system the system that protects the tissues beneath it
- 13. the macromolecule that provides the main source of energy
- 14. the kind of tissue that contracts and relaxes to produce movement
- 16. system a group of organs working together
- 17. the kind of tissue that sends and receives electrical signals
- 19. the system that provides a frame to connect and support body parts
- 20. the system that returns leaked fluid
Down
- 1. anything that can live on its own
- 3. the system that absorbs oxygen and releases carobon dioxide
- 7. the macromolecule that transports and stores hereditary material
- 9. the kind of tissue that covers and protects
- 11. the system that pumps blood through blood vessels
- 13. the most basic unit of life
- 15. the kind of tissue that performs many functions including joining, insulating, protecting, cushioning, supporting, and transporting
- 18. the system that works with the skeletal system to produce movement
- 20. the macromolecule that provides long-term energy