Biology Crossword

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Across
  1. 1. a constant internal environment
  2. 9. bacterial cells
  3. 12. the largest phylum of animals on the planet
  4. 14. the appearance of an organism
  5. 15. discovered the DNA double helix shape
  6. 21. the copying of DNA
  7. 22. a trait that masks another trait
  8. 23. the process of making mRNA
  9. 25. organisms that live together
  10. 26. the variable that is tested in an experiment
  11. 28. a non-living particle that needs a host to reproduce
  12. 29. the molecule from which ATP is made
  13. 30. a large ecosystem characterized by its temperature and amount of rainfall
Down
  1. 2. true cells with organelles
  2. 3. the process of making proteins
  3. 4. termed the word cell
  4. 5. containing two of the same alleles
  5. 6. made of amino acids
  6. 7. a structure made of one sugar, a phosphate and a nitrogenous base
  7. 8. a hypothesis that has been tested and not been disproven
  8. 10. a change in the genetic makeup of an organism
  9. 11. the father of classification
  10. 13. the opposite process of respiration
  11. 16. the father of evolution
  12. 17. Darwin's survival of the fittest
  13. 18. the entire genetic makeup of an organism
  14. 19. the non-living matter in an ecosystem
  15. 20. the father of genetics
  16. 24. the simplest living organism
  17. 27. a catastrophic life-altering event