Unit 2 review.

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Across
  1. 2. Longer, hair-like structures, used for adhering to substances
  2. 4. cells that contains DNA.
  3. 7. makes proteins
  4. 8. organisms whose cells lack a nucleus and other organelles
  5. 11. reticulum smooth makes hormones and controls calcium release. Rough is covered in ribosomes and makes proteins
  6. 18. the body's raw materials, cells from which all other cells with specialized functions are generated
  7. 19. holds chlorophyll and where photosynthesis takes place.
  8. 20. an organelle that is surrounded by a membrane.
  9. 22. organisms whose cells contain a nucleus and other membrane-bound organelles
  10. 23. Used to absorb excess water (stretch and swell) and expel water (contract and release)
Down
  1. 1. Tail-like structure,used for movement
  2. 3. acts as a barrier to protect the cell and a “doorway” letting substances in or out of the cell.
  3. 5. subcellular structure that has one or more specific jobs to perform in the cell
  4. 6. contains digestive enzymes that dissolve cellular waste. Acts like a garbage disposal system.
  5. 9. rigid structure that surrounds the cell membrane. Only found in pant cells
  6. 10. thin tissue that surrounds and contains an organelle.
  7. 11. Used to absorb excess sunlight
  8. 12. helps the cell keep its shape and hold organelles in place
  9. 13. where cellular respiration takes place. Releases energy from glucose for the cell.
  10. 14. membrane-bound structure inside
  11. 15. Used for movement and feeding (capturing prey)
  12. 16. packages substances for transport inside or out of the cell. Acts like a mail delivery system.
  13. 17. Hair-like structures, used for movement
  14. 21. stores food, water and waste.