The history of cell theory

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Across
  1. 2. Scientist who discovered cells while looking at a thin piece of cork.
  2. 3. German scientist who discovered plants were made of cells
  3. 5. This is the basic unit of life and all living things are made of these
  4. 6. Anton van Leeuwenhoek made his own version of the microscope and discovered something very odd when he looked a the gunk on his teeth. What did he discover?
  5. 8. German scientist that discovered cells come from preexisting cells
  6. 10. German scientist who discovered animals were made of cells.
  7. 11. Instrument invented by Zacharias Jensen
Down
  1. 1. Scientist who discovered single-cell organisms
  2. 4. Scientific skills practiced by scientists to get to the cell theory
  3. 7. How were bacteria called first?
  4. 9. This is the minimum number of cells needed to be considered living.