KS3 Biology Revision

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Across
  1. 2. female reproductive cell
  2. 3. male reproductive cell
  3. 7. connects bone to bone
  4. 9. a group of tissues working together
  5. 13. chemical messenger in the body
  6. 14. an organism made of many cells
  7. 15. changes that happen as a child becomes an adult
  8. 17. liquid reducing friction in joints
  9. 19. muscle used to breathing
  10. 20. produces blood cells
  11. 22. smooth tissue protecting joints
  12. 23. contains cell sap in plant cells
  13. 27. swapping oxygen and carbon dioxide
  14. 30. contains chlorophyll for photosynthesis
  15. 31. a group of organs working together
  16. 32. organs where gas exchange happens
  17. 33. the basic building block of all living things
  18. 34. a system that moves bloody around the body
  19. 35. framework of the bones in the body
Down
  1. 1. joining of sperm and egg
  2. 4. system used for breathing
  3. 5. a system that breaks down food
  4. 6. breathing out
  5. 8. connects muscle to bone
  6. 10. process that releases energy from food
  7. 11. breathing in
  8. 12. controls what enters and leaves the cell
  9. 16. protects the lungs and heart
  10. 18. tiny air sacs where gas exchange occurs
  11. 21. muscles that work in pairs
  12. 24. stage between childhood and adulthood
  13. 25. process plants use to make food using light energy
  14. 26. tube carrying air to lungs
  15. 28. jelly-like substance where chemical reactions happen
  16. 29. controls the activities of the cell