Cell

The basic structural and functional unit of all organisms
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cell (Biology)
cells
Foundational Model of Anatomy ID
68646
named as
Cell
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Wikipedia creation date
10/12/2001
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Wikipedia opening text
The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known organisms. A cell is the smallest unit of life. Cells are often called the "building blocks of life". The study of cells is called cell biology, cellular biology, or cytology. Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Most plant and animal cells are only visible under a microscope, with dimensions between 1 and 100 micrometres. Organisms can be classified as unicellular (consisting of a single cell such as bacteria) or multicellular (including plants and animals). Most unicellular organisms are classed as microorganisms. The number of cells in plants and animals varies from species to species, it has been estimated that humans contain somewhere around 40 trillion (4×1013) cells. The human brain accounting for around 80 billion of these cells. Cells were discovered by Robert Hooke in 1665, who named them for their resemblance to cells inhabited by Christian monks in a monastery. Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, and that all cells come from pre-existing cells. Cells emerged on Earth at least 3.5 billion years ago.
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Cell formation
Biological cell
Cells (biology)
Biology cell
Cariology
Cell Formation
First cell
Living cell
Cellular life
Cytota
Cellular process
Cellular processes
Cellular material
Cyto
Subcellular
Animal cells
Biological cells
Parts of a cell
Parts of cell
Biologic cell
Plant & Animal Cells
Living cells
Cell (boilogy)
Sub-cellular
Sub-cellular compartment
Subcellular compartment
Sub-cellular component
Subcellular component
Subcellular components
Sub-cellular components
Cell components
Cell parts
Study of the cell
Cell (biological)
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Cells
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