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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 c... More »

Cell theory was developed in the early 19th century by three German scientists, Theodor Schwann, Matthias Jacob Schleiden and Rudolf Virchow. While all three scientists contributed to the generally accepted classical cel... More »

The modern cell theory states that living organisms are made of cells, that all cells come from other cells and that cells are the most basic life form. As scientific advancements are made, definitions of theories, like ... More »

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Cell biology is a discipline that views the cell as the fundamental unit of life and studies cell structure and function. It seeks to elucidate properties of cells that are universal to all or most cells as well as uniqu... More »

Cell biology is the study of cell structure and function, based on the concept that the cell is the basic unit of life. Understanding cells permits a detailed understanding of the tissues and organisms that cells make up... More »

Non-living things are not composed of cells, as cells are the smallest unit of life. Small organisms such as bacteria and protists are only composed of a single cell, but are alive. More »

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 ... More »