Biology Crossword

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Across
  1. 2. A protein that speeds up chemical reactions in cells.
  2. 6. A trait that shows up even when only one copy is present.
  3. 8. A network of connected food chains in an ecosystem.
  4. 9. Square A chart used to predict possible offspring traits.
  5. 10. An organism that breaks down dead material and recycles nutrients.
  6. 12. A structure made of tissues that performs a specific job.
  7. 13. The process of taking in oxygen and releasing carbon dioxide.
  8. 14. Jelly-like material inside a cell where organelles float around.
  9. 17. The thin layer that controls what enters and leaves the cell.
  10. 18. An organism that makes its own food, like plants.
  11. 20. Plant cell organelle that captures sunlight to make food.
  12. 24. A protein made by the immune system that helps fight off germs and infections. |
  13. 26. An organism that gets energy by eating other organisms.
  14. 28. When particles spread out from areas of high concentration to low concentration.
  15. 29. A trait that helps an organism survive in its environment.
  16. 30. The main energy source used by cells.
  17. 31. Tiny structures that help put proteins together.
  18. 34. The part of the cell that acts like the control center.
  19. 36. A trait hidden unless two copies are inherited.
  20. 38. A change in DNA that can affect an organism.
  21. 39. A characteristic passed from parents to offspring.
Down
  1. 1. Large molecules that help build and repair the body.
  2. 3. A section of DNA that controls a specific trait.
  3. 4. Shows how energy moves from one organism to another.
  4. 5. The process plants use to make sugar using sunlight.
  5. 7. The idea that organisms with helpful traits survive and reproduce more often.
  6. 11. The gradual change in species over long periods of time.
  7. 15. The natural home where an organism lives.
  8. 16. Multiple organs working together to keep the body functioning.
  9. 17. A tightly packed structure that contains DNA.
  10. 19. Living and nonliving things interacting in one area.
  11. 21. Any individual living thing.
  12. 22. A storage sac inside cells that can hold water or nutrients.
  13. 23. The process cells use to release energy from food.
  14. 25. The molecule that carries genetic instructions.
  15. 26. The basic building block that makes up every living thing.
  16. 27. A group of similar cells working together.
  17. 32. A variety of different living organisms in one area.
  18. 33. The movement of water through a membrane from crowded to less crowded areas.
  19. 35. Organelles that turn food into usable energy for the cell.
  20. 37. Keeping stable internal conditions even when the outside changes.