Thursday, May 24, 2007

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Outline of a definition


The unit cell is the anatomical, functional and genetics of living beings.
The cell is a structure consisting of three basic elements: 1 .-
plasma membrane
cytoplasm 2 .- 3 .-
genetic material (DNA).
has the ability to perform three vital functions:
nutrition, relationships and reproduction.
are called eukaryotic cells that have genetic information wrapped in a membrane that forms the core.
A body formed by cells called eukaryotes eukaryote.
Many unicellular organisms have the genetic information dispersed throughout the cytoplasm, no nucleus. In this type of cells are given the name of prokaryotes .


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Cell Membrane Diagram of a Plant Cell Diagram of a cell

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The cytoplasm is the cellular space between the plasma membrane and sheath nuclear.
It consists of the cytosol, the cytoskeleton and cell organelles.
The cytosol hyaloplasm or is the internal environment of the cytoplasm. Is the aqueous solution where they float the cytoskeleton and ribosomes. It consists of a 85% water with a high content of substances dispersed in the colloidal form (proteins, lipids, carbohydrates, nucleic acids and nucleotides and dissolved salts.
In the cytosol there are many most important functions of cell maintenance, as the early stages of decomposition nutrient molecules and the synthesis of many large molecules that make up the cell. It produces an enormous amount of important metabolic reactions: glycolysis, gluconeogenesis, lactic fermentation, etc..
The cytoskeleton appears in all eukaryotic cells.
The chemical composition is a network of protein fibers (microfilaments, intermediate filaments and microtubules).
Its functions are to maintain cell shape, form pseudopodia, contracting muscle fibers, transport and organize the cellular organelles.