What are Cells? Cells are the smallest organizational unit that became the basis of life (in a biological sense). All functions of life are organized and take place inside the cell. Therefore, the cell can function as autonomous as long as all their needs are met. All cellular organisms are divided into two groups, namely organisms prokaryotes and eukaryotes organisms.

Organisms prokaryotes have no nucleus and the internal organization of cells have a relatively more modest. Prokaryotes are divided into two major groups: eubakteria covering almost all types of bacteria, and archaea, the prokaryotes are  very similar to the bacteria and breed in extreme environments like hot springs, acidic or water that contains very high levels of salt . Prokaryotic genomes consist of a single circular chromosome, with no organization of DNA.

Organization of intracellular organisms eukaryotes have a much more complex, partly by internal membranes, organelles that have their own such as the nucleus of the cell membrane and cytoskeleton are highly structured. Tues eukaryotes have multiple linear chromosomes within the nuclei, in it there is a row of very long DNA molecule is divided into packets that are separated by histones and other proteins.

Inside the human body, has identified approximately 210 types of cells. As with other multicellular organisms, human life also begins from a diploid embryo cells result from fusion of haploid oocytes and spermatocytes which then underwent a series of mitosis.At this early stage, embryonic cells are to tipotent, each cell has the capacity to be differentiated one from all types of body cells. Hose over the stage of development, the capacity is lowered into pluripotent differentiation, to be progenitor cells that only have the capacity for differentiated into one cell type only, with a capacity unipoten.

Source from: Wikipedia

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