cell divition is one of the important nutrients
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What is “Cell Growth?”
Cell growth is the process by which cells accumulate mass and increase in physical size. On average, animal cells are ≈10 to 20 μm in diameter with a wide range of sizes, spanning from tiny red blood cells (≈5 μm in diameter) to motor neurons, which can grow 100's of micrometers in length (1). Water accounts for ≈70% of the weight of a cell and macromolecules, such as nucleic acids, proteins, polysaccharides, and lipids constitute most of the rest (≈25%; trace amounts of ions and small molecules make up the difference). The largest contribution to animal cellular dry mass is from proteins, which makes up about 18% of the total cell weight on average. There are many physical, chemical, and biologic factors that affect final cell size. However, it is the biologic factors, in particular intracellular signaling networks that control macromolecule synthesis, that are immediately relevant to cancer. As discussed in the following sections, deregulation of the cellular circuitry controlling biomass accumulation is associated with a wide spectrum of human cancers.
Cell growth is the process by which cells accumulate mass and increase in physical size. On average, animal cells are ≈10 to 20 μm in diameter with a wide range of sizes, spanning from tiny red blood cells (≈5 μm in diameter) to motor neurons, which can grow 100's of micrometers in length (1). Water accounts for ≈70% of the weight of a cell and macromolecules, such as nucleic acids, proteins, polysaccharides, and lipids constitute most of the rest (≈25%; trace amounts of ions and small molecules make up the difference). The largest contribution to animal cellular dry mass is from proteins, which makes up about 18% of the total cell weight on average. There are many physical, chemical, and biologic factors that affect final cell size. However, it is the biologic factors, in particular intracellular signaling networks that control macromolecule synthesis, that are immediately relevant to cancer. As discussed in the following sections, deregulation of the cellular circuitry controlling biomass accumulation is associated with a wide spectrum of human cancers.
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mitosis is the process of cell division in eukaryotes. mitosis is important as a form of reproduction in single celled organisms like the amoeba. mitosis regulate cell growth development and repair in multicellular organisms however if mitosis is out of control cancer can result.
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