Biology Chapter 1 Review Crossword Puzzle

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Across
  1. 3. a signal that organisms react to
  2. 7. proposed scientific explanation
  3. 9. factor that can change in an experiment
  4. 10. series of steps used to solve problems
  5. 14. controlled test to test a hypothesis
  6. 16. all the chemical reactions in an organism
  7. 17. the variable that is measured or observed
  8. 20. group that has no change in variables; used as a standard
  9. 21. organism with more than one cell
  10. 22. change that involves getting larger
  11. 23. change over time
  12. 24. direct method of gathering information in an orderly way
Down
  1. 1. process that seeks to maintain stable internal conditions
  2. 2. a logical conclusion
  3. 4. an explanation that has been supported by a vast amount of evidence
  4. 5. organism with one cell
  5. 6. change that involves stages
  6. 8. illustrates a relationship between variables
  7. 11. the variable that is controlled by experimenter
  8. 12. molecule used to store genetic information
  9. 13. the scientific study of life
  10. 15. information gathered in an experiment
  11. 18. group that has a change in variables
  12. 19. reproduction that requires only one parent