cells

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Across
  1. 2. membrane controls what goes in and out of the cell
  2. 5. group of similar cells working together
  3. 9. fluif filled organells
  4. 12. gets rid of waste
  5. 13. system group of similar organs working together
  6. 15. discovered animal cells
  7. 16. powerhouse of cell
  8. 19. reticulum flattened membrane sacs
  9. 20. site of protein synthesis
  10. 21. process by which a call engulfs and digests a solid particle
  11. 22. the movement of water from an area of high concentration to an area with low concentration
Down
  1. 1. transport movement of materials which requires an expendtiture of energy
  2. 3. process of maintaining a constant interval environment
  3. 4. movement of particles from an area of high concentration to low concentration
  4. 6. movement of materials out of cell
  5. 7. control center
  6. 8. body system of fluid filled canals used for transport of materials
  7. 10. involed in cell division only in animal cells
  8. 11. discovered the nucleus
  9. 14. sites of photosynthesis
  10. 17. small sacs containing digestive enzymes
  11. 18. double helix