Biology Unit 1

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Across
  1. 1. testable explanation for an observation
  2. 3. process by which organisms maintain stable internal conditions
  3. 6. group used for comparison in an experiment
  4. 7. main source of quick energy for cells
  5. 8. basic unit of life
  6. 10. variable deliberately changed in an experiment
  7. 13. water's ability to absorb heat without large temperature change
  8. 14. sum of all chemical reactions in an organism
  9. 17. data that uses numbers and measurements
  10. 18. unequal sharing of electrons makes water this type of molecule
  11. 19. molecule that stores genetic information
Down
  1. 2. molecule that enzymes act upon
  2. 4. membrane property that allows some substances to pass but not others
  3. 5. attraction between molecules of the same substance
  4. 9. protein catalyst that speeds up reactions
  5. 11. region of enzyme where substrate binds
  6. 12. hydrophobic macromolecules including fats and oils
  7. 15. organelle known as the "powerhouse of the cell"
  8. 16. monomer of proteins