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Hooke
Hooke discovered the cell. Hooke looked at a cork under a microscope at 50x and noticed the wall of the cell amongst the tissue of the cork. Through this discovery, the plant cell was discovered. Hooke came up with the word cell because looking at the cork under a microscope made the cells of the cork more visible. He calculated the number of cells in a cubic inch to be approximately 1,259,712,000. -
Leeuwenhoek
Leeuwenhoek discovered "protozoa" and called them "animalcules". He studied things like bacteria-like organisms and improved the blood cell theory. Leeuwenhoek was the first to describe a living cell. He improved and made 500 microscopes in his lifetime. He was inspired by Hooke's novel and helped to prove Hooke's findings as true. By looking through his powerful, 250x microscopes that he created, Leeuwenhoek sought the composition of cells, going beyond Hooke's proposition that they were empty. -
Brown
Brown focused his studies mostly on plants. He collected over 500 plants in 3 weeks. Brown studied orchids, in them he saw pollen traveling in and out of ovals in their cells. He termed this oval the "the nucleus".His statements suggested the nucleus played a key role in fertilization and development of the embryo in plants. Brown named the nucleus, and created the possibility that it was at the center of cellular creation. He disproved the previous theories by creating the idea of the nucleus. -
Schleiden
Schleiden observed the plant cell under the microscope. Through these observations he proposed that all plant tissues are composed of cells. He also made the statement that cells are the basic building blocks of all plants. Shleiden added to Shwanns discovery about plant cells when he discovered that plant tissues are made of living cells. -
Shwann
Schwann is known for developing the cell theory that all living things are composed of cells. He discovered the enzyme and glial cells in nerves which are known as Schwann cells. He proved that cells have independent lives and that there are different types of cells that make up living and nonliving things. He researched animal tissues and observed many living and nonliving cells. He disproved other scientists by specifying that plants and animals are both made of only living cells. -
Virchow
Virchow added the 3rd part to cell theory which is all cells develop from existing cells. He also said that diseased cells come from healthy cells. He made this discovery while he was researching at Berlins University. He proved that the cell theory applies to diseased cells as well as healthy cells. -
Citations
By All Accounts Schwann Was an Excellent, Conscientious Teacher Well-liked by His Students. "Home." Famous Scientists. N.p., n.d. Web.
Science-Of-Aging. "Robert Hooke and The Discovery of the Cell." Robert Hooke and The Discovery of the Cell. N.p., n.d. "Matthias Jacob Schleiden." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 06 Oct. 2016. "Rudolf Virchow." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 06 Oct. 2016. -
Citations
Science-Of-Acing. "Leeuwenhoek Sees the Cell Nucleas."
Leeuwenhoek Sees the Cell Nucleus. N.p., n.p. Web.
Science-Of-Aging. "Robert Brown Names the Cell Nucleus and Proposes Its Importance in Cell Formation." Robert Brown Names the Cell Nucleus and Proposes Its Importance in Cell Formation. N.p., n.d. Web.
"Schwann, Theodor (1810-1882) -- from Eric Weisstein's World of Scientific Biography." Schwann, Theodor (1810-1882) -- from Eric Weisstein's World of Scientific Biography. N.p., n.d. Web.
