Biology Crossword

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Across
  1. 4. Each step up in the energy pyramid, from algae to seals to bears.
  2. 8. Non-living things in the bear's world like snow, ice, and wind.
  3. 9. A reproductive cell that only has 37 chromosomes for the bear.
  4. 10. A physical trait, like clear hollow fur, that helps the bear survive the Arctic.
  5. 12. The science of naming and sorting the bear into groups like "Mammalia."
  6. 14. Any bad guy like a virus or bacteria that makes the polar bear sick.
  7. 15. A single letter like A, T, C, or G in the bear's DNA code.
  8. 16. This describes the bear's cells because they have a nucleus inside.
  9. 21. The act of rewriting the bear's DNA code into an mRNA message.
  10. 23. Organisms that rot the bear's body after it dies to return nutrients to the sea.
  11. 26. A fox eats the bear's leftovers; the fox wins and the bear is unaffected.
  12. 28. A bear gets a tiny bit of this "quick energy" from the glycogen in meat.
  13. 29. When the bear's cells use mRNA to actually build a physical protein.
  14. 30. The specific movement of water across the bear's cell membranes.
  15. 33. A biological helper like Lipase that speeds up the breakdown of fats.
  16. 35. Living things in the bear's world like seals, fish, and seaweed.
  17. 36. The polar bear is at the very top of the food chain with no natural enemies.
  18. 37. A bear can't make food from sunlight, so it has to hunt; what is this called?
  19. 38. A random mistake in the bear's DNA that might change its traits.
  20. 39. The variety of different types of life found in the Arctic ecosystem.
Down
  1. 1. Survival of the fittest where the best-camouflaged bears live longer.
  2. 2. The double-layered gatekeeper that makes up the bear's cell membrane.
  3. 3. The actual letters like Bb that the bear carries in its genes.
  4. 5. Arctic bacteria are this because they lack a nucleus, unlike the bear.
  5. 6. When a bear has one Big T and one little t gene for a trait.
  6. 7. The physical look of the bear, like its black skin or white fur.
  7. 11. How oxygen naturally travels from the bear's lungs into its blood cells.
  8. 13. A random event, like a storm, that changes the bear population by chance.
  9. 14. The bear eats muscle meat to get this molecule for its own tissue repair.
  10. 17. The process a virus uses to explode a bear's cell after making copies.
  11. 18. The actual molecule of energy currency the bear's cells use to move.
  12. 19. A rare Arctic deal where two different species help each other and both win.
  13. 20. The specific part of the cell where the bear's cellular respiration happens.
  14. 22. The general body cells of the bear that contain 74 chromosomes.
  15. 24. The twisted ladder shape that holds the bear's genetic instructions.
  16. 25. The first half of the bear's two-part scientific naming system.
  17. 27. When a bear has two of the same alleles, like two Big T letters.
  18. 31. The process where the bear breathes in O2 and burns sugar to get energy.
  19. 32. The biomolecule found in seal blubber that provides long-term energy.
  20. 34. How does a polar bear keep its inner temperature at 98 degrees while standing on an iceberg?