Cell theory

Cell theory
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  • Who knows who first discovered a cell?
  • Robert Hooke!
  • Yes! In 1665, Hooke looked through a sliver of cork under a microscope and discovered cells. He is whom ignited the spark of the cell theory, leading to deeper discoveries years later by other scientists.
  • After this discovery, cells were being more focused on in the scientific world. About 7 years later, two more scientists added on to what is known as the cell theory. A man by the name of Matthias Schleiden proposed that all plant tissues are made up of cells, and Theodor Schwann proposed all animal tissues are also made up of cells.
  • Hooke first laid eyes on cells but he isn't the one to dive deeper into their construction and meaning. In fact, we didn't know about the nucleus until Robert Brown described it in a paper in 1831. 
  • Wasn't there one more scientist to contribute to the cell theory?
  • Yes! Gold star for you, One-Eyed Monster! in the early 18050's, Rudolph Virchow built on and confirmed another theory of Schwann's- cells come from pre-existing cells. Funny enough, Schleiden disagreed with this theory, and believed they appeared spontaneously. 
  • Oh! Class is over now. See you all tomorrow! We'll be learning about the different parts of the cell.
  • *rrrrring*
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