biology

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Across
  1. 1. A protein with sugar attached used for signaling.
  2. 3. Herbivores that eat the producers.
  3. 10. When pollen and egg join to make a seed.
  4. 11. The system that allows the body to move.
  5. 15. The first organisms to live in a new area.
  6. 17. Making more of the same kind of organism.
  7. 19. Keeping internal conditions steady and balanced.
  8. 21. One animal hunts and eats another.
  9. 23. The thin stalk that holds up the anther.
  10. 24. The part of the stamen that produces pollen.
  11. 27. Top predators at the end of a food chain.
  12. 31. The tube that leads down to the ovary.
  13. 32. An extra outer layer on some viruses.
  14. 33. The plumbing that moves nutrients through a plant.
  15. 34. One animal hunts and eats another.
  16. 36. Carnivores that eat the herbivores.
  17. 38. The structure that supports the plant and its leaves.
  18. 39. The underground part of a plant that absorbs water.
  19. 40. DNA or RNA that holds instructions for life.
Down
  1. 2. A sneaky viral cycle where DNA hides in the host.
  2. 4. The system that fights off germs and infections.
  3. 5. Medicine used to kill bacterial infections.
  4. 6. Turning food or fuel into energy.
  5. 7. Organisms fighting for the same limited resources.
  6. 8. The part of the flower that holds the eggs.
  7. 9. One species benefits by harming a host.
  8. 12. Tubes that move food down from the leaves.
  9. 13. A viral cycle where the host cell is destroyed.
  10. 14. The entire female reproductive part of a flower.
  11. 16. A stable and balanced ecosystem.
  12. 17. An enzyme that turns viral RNA into DNA.
  13. 18. The above-ground parts like stems and leaves.
  14. 20. The entire male reproductive part of a flower.
  15. 22. The sticky top part of the pistil that catches pollen.
  16. 25. Tubes that move water up from the roots.
  17. 26. Parts on a virus that help it attach to cells.
  18. 28. A relationship where both species benefit.
  19. 29. The process of an ecosystem changing over time.
  20. 30. One species benefits and the other is unaffected.
  21. 35. The protein shell that protects a virus.
  22. 37. The system of bones that supports the body.