The Cellular Organization of Life

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The Cellular Organization of Life
1011302The Cellular Organization of Life
The Cell Doctrine All living things are made up of cells. The cell is the unit of life. In the kingdoms Monera and Protista, the entire organism consists of a single cell. In most fungi and in the animal and plant kingdoms, the organism is a highly complex arrangement of up to trillions of cells. The human brain alone contains billions of cells. So vital are cells and their activities to an understanding of life that the cell doctrine has become a central organizing principle in the field of biology. Today, the concept of the cell is taken for granted, but this has not always been true.
George H. Fried; George J. Hademenos: Schaum's Outline of Biology, Fourth Edition. The Cellular Organization of Life, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export