SCIENCE CROWSSWORD

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Across
  1. 2. A waste formed from the breakdown of proteins
  2. 4. Non living things that are responsible for many diseases, including cold sores, colds, and influenza
  3. 10. The voice box
  4. 11. The small gland that releases a chemical messenger called adrenaline into your blood
  5. 12. The system that defends you by destroying invaders
  6. 13. Cells that are designed to do a specific job
  7. 19. A solid waste that gets expelled from the body at periodic intervals
  8. 21. A group of cells that produce and secrete chemicals
  9. 22. A measurement of the number of breaths you take in a minute
  10. 24. Groups of different tissues form ______
  11. 26. Groups of different organs work together in _______
  12. 27. The system that sends electrical messages throughout the body
  13. 28. A chemical message released into the bloodstream
  14. 29. What living things are often referred to as
  15. 31. All living things respond to the ___________
  16. 32. Tiny organs found in cells
  17. 33. An organism made up of a single cell
  18. 35. A disease transmitted from animals to humans and often back again
  19. 36. A chemical that acts on the nervous system to reduce sensitivity to pain
  20. 40. A chemical and physical process in which foods are changed into a form they can be taken into cells
  21. 41. A measurement of the number of times your heart beats in a minute
  22. 42. What water, salts, and small amounts of urea are excreted through
  23. 43. Protects the inner contents of a cell and is made of fat cells called lipids
  24. 44. The part of the cell where excess water and food is stored
Down
  1. 1. What things such as pollen and bacteria stick to in the nasal cavity
  2. 3. The small sacks that bronchioles end in
  3. 5. Organisms made up of many cells
  4. 6. The part of the cell that produces energy in the form of 'ATP'
  5. 7. Only found in plant cells and is where photosynthesis takes place in a cell
  6. 8. The blood vessel that connects veins and arteries
  7. 9. The small tubes that the bronchi repeatedly divide into
  8. 14. The removal of wastes from the body
  9. 15. The blood vessel that transports blood away from the heart
  10. 16. The organ that helps regulate sugar levels
  11. 17. The main function of the respiratory system
  12. 18. All living things are composed of other ____
  13. 20. The system that produces chemical messengers called hormones
  14. 23. The system that is responsible for breathing
  15. 25. Bean shaped organs that come in pairs
  16. 30. The blood vessel that transports blood to the heart
  17. 34. Large molecules that lock onto invading organisms
  18. 37. Two tubes, each one leads into a lung
  19. 38. Groups of similar cells form _______
  20. 39. The part of the cell that contains the DNA of a cell
  21. 41. The contraction or squeezing of your ventricles
  22. 45. Wall Only found in plant cells and is the outer barrier of the cell