Biology Homework

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Across
  1. 5. the measure of how something acid or alkaline is.
  2. 7. a group of organs that work together to perform a function
  3. 8. a word that refers to a non-living thing
  4. 9. a group of cells that performs a function
  5. 11. attraction between water molecules
  6. 12. organelle where photosynthesis occurs
  7. 13. tissues that work together to perform a specific function
Down
  1. 1. an organelle that controls the cell activities and stores DNA
  2. 2. group of the same species that are living in a certain area
  3. 3. attraction between other molecules
  4. 4. a word that refers to a living being
  5. 6. a part within a cell that has a specific function
  6. 10. refers to a single cell organism