History of Cell Theory

History of Cell Theory
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  • Hi, I am Yujiro and this is our classroom. Today, we'll be learning about how The Cell Theory came to be. Let's go!
  • These are my teacher and classmates. They will be with us as we learn about The Cell Theory.
  • Yeah! Today, we'll be looking on some people behind this theory.
  • So first, let's talk about what The Cell Theory tells us: 1.) All organisms are composed of one or more cells, 2.) The cell is the basic unit of life, and 3.)  Cells arise from pre-existing cells. Now, with the help of your classmates, let's go through the people behind this theory.
  • Hi! In 1590, a guy named Zacharias Janssen invented the first microscope. Because of his invention, a lot of curious people, like Robert Hooke, wanted to use it to examine things. In 1665, Hooke looked at a cork and saw tiny chambers inside them and coined them with the term 'cell'.
  • Then, in 1673, Anton van Leeuwenhoek was the first to see living microscopic organisms and called them 'animalcules'. Fast forward to 1838-1839, Matthias Schleiden and Theodore Schwann concluded that "all living plants are made up of cells" and "all living animals are made up of cells" respectively.
  • And finally, in 1855, Richard Virchow concluded that "where a cell exists, there must have been a pre-existing cell."
  • And that's how The Cell Theory came to be, thanks to all these people! Thank you for coming too! 'Till next time!
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