AP Biology Vocabulary

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Across
  1. 3. returns nutrients to ecosystems
  2. 4. a type of speciation
  3. 6. connects to enzyme
  4. 8. cause of trisomy 21
  5. 10. lack a nucleus
  6. 12. a symbiotic relationship
  7. 17. plants do this on hot dry days
  8. 19. gene regulation in bacteria
  9. 20. splits polymers
Down
  1. 1. important signal in cell division
  2. 2. contains nitrogen atoms
  3. 3. high to low
  4. 5. organelle containing digestive enzymes
  5. 7. a level of the food chain
  6. 9. produces CO2 as glucose is oxidized
  7. 11. type of immune response
  8. 13. 2n
  9. 14. energy molecule
  10. 15. carbon compounds
  11. 16. protein produced by active B cells
  12. 18. electron carrier