-
Robert Hooke and the Cell Theory
Robert Hooke, an English scientist, discovered a structure in a cork screw using a primitive microscope with a 50x magnification. Before Hooke's theory, people believed that the only organisms that existed were the ones seen by the naked eye and that organism's spontaneously appeared with a theory called "Spontaneous Generation". However, Robert Hooke disproved this using a microscope by showing that all organisms are made up of small 'pores'. -
Anton Van Leeuwenhoek and the Cell Theory
Anton Van Leeuwenhoek contributed to the cell theory by discovering the existence of single-celled organisms; helped to form the basis of cell theory. He made the discovery of single-celled organisms when using a microscope to observe pond water and thusly found protists (animalcules) and spirogyra (green algae). This disproved spontaneous generation because this showed that organism are made up of cells or one cell and that living beings (like algae) don't suddenly pop into existence. -
Robert Brown and the Cell Theory
Brown gave a name to the nucleus of a plant cell, described what it was, how it functioned within the cell, and provided a description of the cytoplasmic functions within a cell. He observed small particles ejected from pollen grains and saw they moved and that the same thing happened with inorganic matter. Before, people didn't know that a cell had individual organelles and that those organelles had functions. Brown proved that plant cells have a nucleus and cytoplasm and the functions of them. -
Matthias Schleiden and the Cell Theory
Schleiden stated all plant tissues are composed of cells and an embryonic plant arose fro a single cell and he declared cells are the 'basic building blocks of life'. He was a botanist that was interested in plants microscopically, and he discovered plants cells thusly. He expanded on Hooke's model of a plant cell by stating that the embryonic plant arose from a single cell and plant growth came about from the production of new cells. -
Theodor Schwann and the Cell Theory
Schwann concluded that all tissues are made of cells and traced development of many adult tissue from early embryo stages. He worked under a German scientist, Muller, who got him interested in microbiology and Shleidan's work. He expanded upon the previous model by including animals in the classification of cells and proposed three generalizations on cells and to the understanding of adult animal tissues, ultimately establishing that, structurally, all living things are 'kin'. -
Rudolf Virchow and the Cell Theory
He stated cells only formed from the division of other cells and proposed the basic idea of cellular pathology- that diseases resulted from changes in specific groups of cells. He found this by being appointed as chair of pathological anatomy and conducted research on cell division. He disproved Schleiden's theory that cells divide from the nucleus and proved diseases resulted from changes in groups of cells rather than changes in an organism as a whole. -
Bibliography 2
anton-van-leeuwenhoek-biography-cell-theory-discoveries.html
Gillen,Allen, Oliver,Douglas, "Antony van Leeuwenhoek: Creation "Magnified" Through His Magnificent Microscopes", answersingenisis.org, 2016 Answers in Genesis, August 15, 2012, answersingenesis.org/creation-scientists/profiles/antony-van-leeuwenhoeks-microscopes-creation-magnified
"Robert Brown", famousscientist.org, copyright 2016, famousscientists.org/Robert-brown
"What did Robert Brown contribute to cell theory", reference.com -
Bibliography
House, Paul, "Robert Hooke and The Discovery of the Cell", science-of-aging.com, MasParaSol Media Group Ltd., science-of-aging.com/timelines/hooke-history-cell-discovery.php
The Editors of Encyclopaedia Britannica, "Spontaneous generation", Britannica.com, Encyclopaedia Britannica Inc., Britannica.com/science/spontaneous-generation
Higgenbotham, Thomas, "Anto Von Leeuwenhoek: Biography, Cell Theory & Discoveries", study.com, copyright 2003-2016 study.com, study.com/academy/lesson/ant -
Bibliography 3
IAC Publishing Labs Company, reference.com/science/did-Robert-brown-contribute-cell-theory-aecbd93315847b6e# -
Bibliography 4
-
Bibliography 5
