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Theodor Schwann (German pronunciation: [ˈteːodoːɐ̯ ˈʃvan]; 7 December 1810 – 11 January 1882) was a German physician and physiologist. His most significant contribution to biology is considered to be the extension of cell theory to animals.
- Copley Medal (1845)
Lived 1810 – 1882. Theodor Schwann was an anatomist and physiologist who is best known for developing the cell doctrine that all living things are composed of cells. He established that the cell is the basic unit of all living things. He believed that cells are governed by scientific processes and rejected vitalism which invoked the presence ...
Nov 21, 2023 · Schwann went on to make many profound discoveries in science including the discovery of the enzyme pepsin, spontaneous generation, and identifying the role of microbes...
- What did Theodor Schwann discover in the cell theory?Theodor Schwann provided the framework for what became known as the cell theory. Theodor Schwann, a German zoologist, discovered that all animals...
- What did Theodor Schleiden discover?Theodor Schwann made numerous contributions to science that include discovery of the enzyme pepsin, spontaneous generation, and identifying the rol...
Mar 4, 2024 · Cell theory, fundamental scientific theory of biology according to which cells are held to be the basic units of all living tissues. First proposed by German scientists Theodor Schwann and Matthias Jakob Schleiden in 1838, the theory that all plants and animals are made up of cells marked a great.
- Muscle tissue. Some of Schwann's earliest work in 1835 involved muscle contraction, which he saw as a starting point for "the introduction of calculation to physiology".
- Pepsin. In 1835, relatively little was known about digestive processes. William Prout had reported in 1824 that the digestive juices of animals contained hydrochloric acid.
- Yeast, fermentation, and spontaneous generation. Next Schwann studied yeast and fermentation. His work on yeast was independent of work done by Charles Cagniard de la Tour and Friedrich Traugott Kützing, all of whom published work in 1837.
- Cell theory. In 1837, Matthias Jakob Schleiden viewed and stated that new plant cells formed from the nuclei of old plant cells. Dining with Schwann one day, their conversation turned on the nuclei of plant and animal cells.
Microscopical researches into the accordance in the structure and growth of animals and plants is a famous treatise by Theodor Schwann published in 1839 which officially formulated the basis of the cell theory.
The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s. In this theory the internal contents of cells were called protoplasm and described as a jelly-like substance, sometimes called living jelly.
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