Biology Crossword

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Across
  1. 4. Act of breathing.
  2. 5. the actin which offspring is produced by two parents.
  3. 7. A substance produced by an organsim to start a biochemical reaction.
  4. 11. all bones and joint in the human body.
  5. 13. the substance on which an enzyme acts.
  6. 14. spontaneous movement of solvent molecules.
  7. 15. Contains chlorophyll, where photosynthesis takes place.
  8. 16. the network of organs and tissues that help you breath.
  9. 18. Any living factor
  10. 19. special organs and cells that fight infections.
  11. 20. network of tissues that rid the body of toxins.
  12. 21. a substance produced by a living organism which acts as a catalyst.
  13. 22. a substance that increases that rate of a chemical reaction
  14. 25. An enzyme that is essential for breaking down lactose.
Down
  1. 1. Converting light energy into chemical energy.
  2. 2. a stable state of balance.
  3. 3. a substance that increases the rate of a chemical reaction.
  4. 6. burning fuels react with oxygen to release energy.
  5. 8. movement of a substance from a place high or low concentration
  6. 9. A bacteria or virus that can cause diseases.
  7. 10. state of all bodily systems being maintained and balanced
  8. 12. life sustaining chemical reaction in organisms.
  9. 17. Any non-living factor.
  10. 23. a group of tissues on a lining organism that have adapted
  11. 24. Membrane-bound unit that contains the fundamental molecules of life.