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the body cells

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Posted almost 10 years ago

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This article is about the term in biology. For other uses, see Cell (disambiguation). Page semi-protected Cell [login to view URL] Onion (Allium) cells in different phases of the cell cycle [login to view URL] The cells of eukaryotes (left) and prokaryotes (right) The cell (from Latin cella, meaning "small room"[1]) is the basic structural, functional and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the "building blocks of life". The study of cells is called cell biology. Cells consist of a protoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids.[2] Organisms can be classified as unicellular (consisting of a single cell; including most bacteria) or multicellular (including plants and animals). While the number of cells in plants and animals varies from species to species, humans contain about 100 trillion (1014) cells.[3] Most plant and animal cells are visible only under the microscope, with dimensions between 1 and 100 micrometres.[4] The cell was discovered by Robert Hooke in 1665. The 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 all cells come from preexisting cells, that vital functions of an organism occur within cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.[5] Cells emerged on Earth at least 3.5 billion years ago
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I have academic degrees including a Bachelor of Arts and Master of Science. I am currently a PhD Candidate at world top University. I am employed as a research associate at a museum and genetics laboratory. I have multiple publications in peer-review journals. I am a part-time University lecturer/instructor requiring assignment and essay evaluation. Please do not hesitate to contact me for any additional information.
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