BIOL 1090 Chapter Notes -Cell Membrane, Veterinary Virology, Theodor Schwann

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We do not know when humans first discovered microscopes but that is the only way we can see cells as they are so small. Robert hook (1600s) observed the empty sell walls of dead plant tissue in a piece of cork he called it cells as they reminded him of the monks living in cells of a monastery. Leeuwenhoek was the first to examine a drop of pond water under a microscope and observe the teeming microscopic animalcules . He was also the first to describe various forms of bacteria. Leeuwenhoek was criticized at first but once hook confirmed his statements, he became a celebrity. In 1838, mathias schleiden concluded that, despite the differences in the structure of various tissues, plants were made of cells and that the plant embryo arose from a single cell. In 1839, theodor schwann published a comprehensive report on the cellular basis of animal life.

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