cells introduction

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Across
  1. 3. brain of the cell
  2. 7. powerhouse of the cell
  3. 9. simple type of cell
  4. 11. complicated type of cell
  5. 13. animal cells lack this
Down
  1. 1. photosynthesis takes place here
  2. 2. states that all biological organisms are composed of cells
  3. 4. prokaryotic organisms
  4. 5. no cell wall
  5. 6. tool used to see cells
  6. 8. structures in a cell
  7. 10. smallest unit of life
  8. 12. has chloroplast