Well there are three.
1. All living organisms are made up of one or more cells.
2. Cells are the basic unit of organization in an organism.
3. All cells come from other cells. (Omnis cellula e cellula)
In Biology, cell theory is a scientific theory that describes the properties of cells, the basic unit of structure in every living thing. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory is one of the foundations of biology.
The three parts to the cell theory are as described below:
The cell was first seen by Robert Hooke in 1665. He examined (under a coarse, compound microscope) very thin slices of cork and saw a multitude of tiny pores that he remarked looked like the walled compartments a monk would live in. Because of this association, Hooke called them cells, the name they still bear. However, Hooke did not know their real structure or function.[1] Hooke's description of these cells (which were actually non-living cell walls) was published in Micrographia.[2] His cell observations gave no indication of the nucleus and other organelles found in most living cells.
The first person to make a compound microscope was Zacharias Jansen, while the first to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra and named the moving organisms animalcules, meaning "little animals".[3] Leeuwenhoek probably also saw bacteria.[4] Cell theory was in contrast to the vitalism theories proposed before the discovery of cells.
The idea that cells were separable into individual units was proposed by Ludolph Christian Treviranus [5] and Johann Jacob Paul Moldenhawer.[6] All of this finally led to Henri Dutrochet formulating one of the fundamental tenets of modern cell theory by declaring that "The cell is the fundamental element of organization".[7]
The observations of Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow, and others led to the development of the cell theory. The cell theory is a widely accepted explanation of the relationship between cells and living things. The cell theory states:
The cell theory holds true for all living things, no matter how big or small. Since according to research, cells are common to all living things, they can provide information about all life. And because all cells come from other cells, scientists can study cells to learn about growth, reproduction, and all other functions that living things perform. By learning about cells and how they function, you can learn about all types of living things. Cells are the building blocks of life
Credit for developing cell theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. In 1839, Schwann and Schleiden suggested that cells were the basic unit of life. Their theory accepted the first two tenets of modern cell theory (see next section, below). However, the cell theory of Schleiden differed from modern cell theory in that it proposed a method of spontaneous crystallization that he called "free cell formation".[8] In 1855, Rudolf Virchow concluded that all cells come from pre-existing cells, thus completing the classical cell theory. (Note that the idea that all cells come from pre-existing cells had in fact already been proposed by Robert Remak; it has been suggested that Virchow plagiarised Remak.)[9]
Modern interpretationThe generally accepted parts of modern cell theory include:The cell is the basic building block in all living things.
cells are the basic unit of structures and function in all living things
all living things are made up of cells
DNA, the genetic material within the nucleus of the cell, is touched upon, but no specific parts of the cell, or"organelles", are explicitly mentioned in the Cell Theory, which states the following: 1. Cells are the fundamental unit of life. 2. All functions of life occur either within the cell itself or in the interface between cells. 3. Cells can only arise from pre-existing cells. 4. Genetic material is passed from mother cell to daughter cell in the form of DNA.
Theodor Schwann was a physiologist and made several discoveries. He contributed to cell theory, discovered Schwann cells, studied pepsin, made discoveries about yeast, and invented the term metabolism.
Cell Theory
Before the cell theory it was pre-renaissance. The renaissance was the boom of art and science. So, before the cell theory was religion.
Cell Theory. It states that all new cells are created by old cells dividing into two.
Theodor Schwann wrote the first two parts of the cell theory
They have money
schleiden and schwann
list three parts of the cell hteory list three parts of the cell hteory
The cell theory was introduced by two biologists, Schleidan and Schwann
Two scientists came up with The Cell Theory. It was in 1839, Matthias Schleidan and Theodor Schwann, two German Biologists came up with this theory.
cell work by a microscope to see it and the are a germs and some parts of our body
one, all organisms are made of one or more cells. two, the cell is the basic unit of organization in organisms. three, all cell are made of other cells!
* The cell is the basic unit of living things
The cell theory is supported by the fact that the cell membrane, cytoplasm, and genetic material can be found in all types of cells.
Two parts of the cell that can be used for movement and are made by the cytoskeleton are cilia and flagella.
The three parts of the cell theory include all life is composed of cells, cells are the building block of life, and all cells are derived from previous cells. These were found out by three different people.