Cells

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Across
  1. 3. The lens nearest to the specimen
  2. 4. The guard of a cell
  3. 7. Energy production
  4. 11. Collection of tissues
  5. 12. Control centre
  6. 14. Smallest structural units of living things
  7. 16. Multiple cells
  8. 18. Large knob
  9. 19. Thin glass sheet
  10. 21. Adapted to a special function
Down
  1. 1. One cell
  2. 2. Making new body cells
  3. 3. Group of organs
  4. 5. Performs functions to survive on its own
  5. 6. Gel-like fluid
  6. 8. Provides structure to the cell
  7. 9. Keeps objects pressed flat
  8. 10. Simple cell
  9. 13. Storage container
  10. 15. Layer of cells
  11. 17. What to put your eye nearest to, on a microscope
  12. 20. Small knob