Q:

Who were the cell theory scientists?

A:

Quick Answer

The cell theory scientists were Theodor Schwann and Matthias Jakob Schleiden. Schleiden suggested that all the different parts of plants are made of cells. Schwann came to the same conclusion as Schleiden and stated further that animals were also composed of cells.

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Full Answer

Schleiden further suggested that cells were made by a crystallization process either within other cells or from the outside. However, this theory was later refuted by scientists Rudolf Virchow, Robert Remak and Albert von Kölliker.

Nevertheless, Rudolf Virchow later made contributions to Schleiden’s and Schwann’s work. He proposed that living cells must develop from pre-existing cells. However, this idea had already been proposed by Robert Remak, who further published observations on cell division disapproving Schwann’s and Schleiden’s generation schemes. Remak stated that binary fission was how new animal cells were made. No further contributions were made on cell theory.

The modern interpretation of cell theory states:

  • All living cells arise from pre-existing cells by division
  • All known living things are composed of one or more cells
  • Energy flow occurs within cells
  • All cells have the same chemical composition in organisms of the same species
  • The activity of an organism depends on the total activity of independent cells
  • The cell is the fundamental unit of structure and function in all living organisms
  • Learn more about Cells

Related Questions

  • Q:

    What were Theodor Schwann's contributions to cell theory?

    A:

    Theodor Schwann, along with fellow scientist Matthias Schleiden, developed the cell theory, which is basically a description of the various parts and functions of plant and animal cells. Schwann and Schleiden developed the cell theory in 1838. Schwann went on to publish their findings in 1839 and, as a result, received much of the notoriety for their work.

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  • Q:

    What is the purpose of staining the onion cell?

    A:

    The primary reason that scientists and students stain onion cells is to make it easier to discern the various structures and organelles. In practice, most cells are treated with stains or dyes to give them higher contrast and improve the researcher’s ability to visualize the key features. Several different stains and dyes are in common use, including eosin, iodine and safranin.

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  • Q:

    What is cell theory?

    A:

    Cell theory is the scientific theory that describes the properties of cells, primarily that the cell is the basic unit of life, and all living things are made of cells and all cells come from pre-existing cells. Modern cell theory is the result of centuries of research and experimentation facilitated by the invention of the microscope. Cell theory dispels the past myth of spontaneous generation or life coming from nothing.

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  • Q:

    What are the three parts of the cell theory?

    A:

    The three fundamental propositions of classical cell theory are that the cell is the most basic unit of life, all life is made up of cells and cells are formed only by other cells. Each tenet of this theory is important to understanding the way living things function on every level.

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