The Cell Theory
Storyboard Szöveg
- In The Class
- Today we will be having a test on the cell theory
- Taking The Test
- (1) All living things are made up of cells
- (2) Cells are the smallest units of life
- (3) All cells come from preexisting cells through the process of cell division.
- Next Day...
- The Dutch naturalist and microscopist Anton van Leeuwenhoek (1632-1723), using simple microscopes of his own making, discovered bacteria, protozoa, spermatozoa, rotifers, Hydra and Volvox, and also parthenogenesis in aphids.
- Today we will be taking notes on more about The Cell Theory, and who was apart of it
- More Notes...
- Rudolf Carl Virchow lived in nineteenth century Prussia, now Germany, and proposed that omnis cellula e cellula, which translates to each cell comes from another cell, and which became a fundamental concept for cell theory.
- Theodor Schwann demonstrated the same fact for animal tissues, and in 1839 concluded that all tissues are made up of cells: this laid the foundations for the cell theory
- Even More Notes...
- Zacharias Janssen (born between 1580 and 1588, died in 1638) was a famous Dutch inventor and spectacle-maker that is today best known for his associations in the creation of early models of telescope and compound microscope.
- Robert Hooke (1635-1703) is an English physicist. He contributed to the discovery of cells while looking at a thin slice of cork. He then thought that cells only exist in plants and fungi. In 1665, he published Micrographia.
- End of Note
- In 1838, Matthias Schleiden, a German botanist, concluded that all plant tissues are composed of cells and that an embryonic plant arose from a single cell. He declared that the cell is the basic building block of all plant matter. ... Cells are organisms and all organisms consist of one or more cells.
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