History of Cell Theory

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Across
  1. 2. Process by which cells divide to produce new cells.
  2. 4. Cell theorists proposed that all cells come from pre-existing cells.
  3. 5. The control center of the cell that contains genetic material.
  4. 9. Scientist who observed and documented cells for the first time.
  5. 11. The idea that all living organisms are composed of one or more cells.
  6. 12. Small structures within a cell that perform specific functions.
  7. 13. The scientist who developed the cell theory in 1839.
  8. 14. The most important part of a microscope or telescope.
  9. 15. Powerhouse of the cell.
Down
  1. 1. The study of cells and their functions.
  2. 3. Instrument is used to visualize cells and other microscopic structures.
  3. 6. The jelly-like substance that fills the cell and surrounds the organelles.
  4. 7. Scientists discovered that all plants are made up of cells.
  5. 8. Basic structural and functional unit of life.
  6. 10. The fluid-filled space inside a cell.
  7. 11. MEMBRANE The protective outer covering of a cell.