biology

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Across
  1. 3. What is the movement of particles from high to low concentration?
  2. 7. Which organelle contains digestive enzymes?
  3. 9. Where does exchange of substances between blood and tissues occur?
  4. 12. What process causes water loss from leaves as water vapour?
  5. 13. What molecule carries oxygen in red blood cells?
  6. 18. What structure helps move substances over surfaces in the body?
  7. 19. What molecule transfers energy in cells?
  8. 20. What is the movement of water through a partially permeable membrane?
Down
  1. 1. What process makes glucose using light?
  2. 2. Where is ATP produced in respiration?
  3. 4. What pigment absorbs light for photosynthesis?
  4. 5. What cell division produces gametes?
  5. 6. What polysaccharide forms plant cell walls?
  6. 8. dioxide What gas is produced during respiration?
  7. 10. Which tissue transports sugars in plants?
  8. 11. Where do gas exchange in leaves mainly occur?
  9. 14. What protein acts as a biological catalyst?
  10. 15. What gas is required for aerobic respiration?
  11. 16. Where is DNA kept?
  12. 17. Which tissue transports water in plants?