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The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
Ángela Ruiz Robles (March 28, 1895 in Villamanín, León – October 27, 1975 in Ferrol, A Coruña) was a Spanish teacher, writer, pioneer and inventor of the mechanical precursor to the electronic book, invented 20 years prior to Michael Hart’s Project Gutenberg, commonly referred to as the true inventor of the e-book, and over half a century before present-day e-books.
The list of human cell types provides an enumeration and description of the various specialized cells found within the human body, highlighting their distinct functions, characteristics, and contributions to overall physiological processes. Cells may be classified [ 1] by their physiological function, histology (microscopic anatomy), [ 2 ...
Cell type. A cell type is a classification used to identify cells that share morphological or phenotypical features. [ 1] A multicellular organism may contain cells of a number of widely differing and specialized cell types, such as muscle cells and skin cells, that differ both in appearance and function yet have identical genomic sequences ...
Centrosome. Cell membrane. The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells usually have a single nucleus, but a few cell types, such as mammalian red blood cells, have no nuclei, and a few others including osteoclasts have many.
Cell cycle. Onion ( Allium) cells in different phases of the cell cycle. Growth in an ' organism ' is carefully controlled by regulating the cell cycle. Cell cycle in Deinococcus radiodurans. The cell cycle, or cell-division cycle, is the sequential series of events that take place in a cell that causes it to divide into two daughter cells.
Matilda Ledger was photographed in New York City this week, and her resemblance to her late father, actor Heath Ledger, is undeniable.. On Wednesday, the 18-year-old was seen walking hand-in-hand ...
Glia. Glia, also called glial cells ( gliocytes) or neuroglia, are non- neuronal cells in the central nervous system ( brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses. The neuroglia make up more than one half the volume of neural tissue in the human body. [ 1]