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  1. Schleiden in 1838, German botanist, found out cell as the basic unit of plant structure. Theodor Schwann, a German physiologist in 1839 defined cell as the basic unit of animal structure also. In 1839, they together proposed the two statements of the present cell theory.

  2. View full lesson: http://ed.ted.com/lessons/the-wacky-history-of-cell-theoryScientific discovery isn't as simple as one good experiment. The weird and wonder...

  3. Nov 05, 2007 · The cell theory, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology.

  4. Mar 21, 2022 · What are your thoughts on cell theory? In biology, cell theory is the historical scientific theory that living organisms are made up of cells, and all cells occur from pre-existing cells. Cells are the fundamental component of structure in all organisms, and they are the basic unit of reproduction. The action of an life form depends on the total activity in independent cells. This quiz will be ...

  5. The cell theory was arrived at after much study of living cells due to the intellectual contributions of Matthias Schleiden who noted all plants contains cells, and in 1838 added that different ...

  6. Matthias Schleiden (1838) Concluded that all plants are composed of cells. Theodor Schwann (1839) Concluded that all animals are composed of cells. Rudolf Virchow (1855) Concluded that cells only come from other cells.

  7. May 05, 2019 · Cell Theory: all living organisms are composed of cells. The cell is the basic unit of life. Gene Theory: traits are inherited through gene transmission. Genes are located on chromosomes and consist of DNA. Evolution: any genetic change in a population that is inherited over several generations. These changes may be small or large, noticeable ...

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