Respuesta :
Cell division occurs for three reasons: reproduction, growth, repair, and renewal. Reproduction —asexual reproduction—one-celled organisms reproduce through mitosis Cell division promotes growth by transforming a fertilised egg into a multicellular organism.
Repair and regeneration — replaces cells that die as a result of normal wear and tear or injury. As we all know, reproduction is necessary for the continuation of life. Cell division is required to generate genetic diversity. Cell division is an important process by which a unicellular organism develops into a new organism in unicellular organisms. Growth factors include cell coordination and protein signals released by body cells that stimulate other cells to divide. Positional Inhibition—In order to divide, animal cells must be anchored (attached to a substrate) and cannot be overcrowded ("Density Dependant Inhibition") - Cells that are overcrowded stop dividing. Each cell binds a small amount of growth factor, resulting in insufficient activator to cause division in any single cell.
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