The Center Of Life Have you ever wonder, how the human body works, or how is life generated; life is a mystery full of questions from how our life spans from just an embryo to a grown human being, its wasn’t till the biologist Walther Flemming discovered the process call mitosis, that many question were finally answered. Cell are the smallest living units in our body, each cell performs a specific function in order to keep us alive and for all our organs to function, although we have different cell types and they perform different functions all cells have three main parts: the plasma membrane, cytoplasm and nucleus. Plasma membrane is a security fence that surrounds the cell and contains specific check points that influence cellular activity in various ways. Second part of the cell is the cytoplasm or known as a cell forming material and this is the part of the cell that lies internal to the plasma membrane in the middle of the cell, is a jellylike substance in this part is where most of the cell activities are done. Last part is the center of the cell call nucleus, nucleus is the responsible for all transmitting genetic information also directs the cells activities; most cell have only one nucleus but there are exceptions for example skeleton cells have multiple nucleus. As every living thing in planet earth the smallest living units, cell , also have a cycle of life this process is call mitosis which is the separation of the nucleus in to two identical sets in two daughter nuclei. The process of mitosis is complex and is divided into phases, after the completion of one set of activities and the start of the next one. These stages are prophase, prometaphase, anaphase and telophase. This phases are the life cycle of a cell and could be compare to our human life cycle with the exception they don’t die and the ones that does they still have a function as dead cell forming our skin.