Biology Advanced Crossword Puzzle

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Across
  1. 1. The idea that complex cells started when one cell swallowed another.
  2. 4. A tree like map showing how species are related.
  3. 7. Studying how babies develop before birth to find evolutionary links.
  4. 10. Multicellular organisms that must eat food to survive and usually move around to find it.
  5. 11. Multicellular organisms that make their own food from sunlight and have cell walls.
  6. 12. The cell’s brain or control center. it holds the DNA.
  7. 15. Complex cells with a nucleus.
  8. 17. The powder containing male plant cells.
  9. 20. The instruction manual molecule for all life.
  10. 23. Everywhere on Earth where life exists.
  11. 25. Molecules made of amino acids that do the work in cells.
  12. 28. Using electricity to sort DNA by size.
  13. 30. A random change in the genetic code.
  14. 31. A large region with a specific climate.
  15. 32. The female part of a flower.
  16. 33. Parts that look similar because of a shared ancestor.
  17. 35. All the living and non living things in one area.
  18. 36. The biggest, broadest group of living things.
  19. 37. The slow regrowth of an ecosystem over time.
  20. 39. Humans choosing parents to get specific traits.
Down
  1. 2. How living things change over very long periods of time.
  2. 3. Any germ that causes disease.
  3. 5. A sneaky viral attack where the virus hides and sleeps inside the cell.
  4. 6. A fast viral attack that bursts the host cell.
  5. 8. Green panels in plants that catch sunlight.
  6. 9. Directly changing an organism's DNA.
  7. 11. The lab tool that photocopies DNA.
  8. 13. The tiny, controllable openings on the surface of leaves that act like valves for a plant's gas exchange.
  9. 14. When migration mixes the DNA of different populations.
  10. 16. A chemical name tag that identifies a germ.
  11. 18. Y shaped proteins that attack specific germs.
  12. 19. A trait that helps an organism survive in its environment.
  13. 21. The first organisms to grow in a lifeless area.
  14. 22. The second largest group of living things.
  15. 24. Simple cells without a nucleus.
  16. 26. A group of closely related species.
  17. 27. Organisms that can mate and have fertile offspring.
  18. 29. Parts that do the same job but are not related.
  19. 34. A female egg cell.
  20. 38. A training shot that teaches the immune system to fight a germ.