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Organelle. In cell biology, an organelle is a specialized subunit, usually within a cell, that has a specific function. The name organelle comes from the idea that these structures are parts of cells, as organs are to the body, hence organelle, the suffix -elle being a diminutive. Organelles are either separately enclosed within their own lipid ...
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
Lysosome. Centrosome. Cell membrane. A lysosome ( / ˈlaɪsəˌsoʊm /) is a single membrane-bound organelle found in many animal cells. [ 1][ 2] They are spherical vesicles that contain hydrolytic enzymes that digest many kinds of biomolecules. A lysosome has a specific composition, of both its membrane proteins and its lumenal proteins.
Stanford Online High School, also known as Stanford OHS, SOHS, or OHS and formerly known as EPGY Online High School, is an online independent school located within Stanford University for academically talented students worldwide. It operates as a six-year school, serving students in grades 7–12. The current Head of School is Tomohiro Hoshi.
Symbiogenesis ( endosymbiotic theory, or serial endosymbiotic theory[ 2]) is the leading evolutionary theory of the origin of eukaryotic cells from prokaryotic organisms. [ 3] The theory holds that mitochondria, plastids such as chloroplasts, and possibly other organelles of eukaryotic cells are descended from formerly free-living prokaryotes ...
The cytoskeleton consists of (a) microtubules, (b) microfilaments, and (c) intermediate filaments. [ 1] The cytoskeleton is a complex, dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including those of bacteria and archaea. [ 2] In eukaryotes, it extends from the cell nucleus to the cell membrane and is ...
In cell biology, a vesicle is a structure within or outside a cell, consisting of liquid or cytoplasm enclosed by a lipid bilayer. Vesicles form naturally during the processes of secretion ( exocytosis ), uptake ( endocytosis ), and the transport of materials within the plasma membrane. Alternatively, they may be prepared artificially, in which ...
Liamhemsworth/Instagram. Hunger Games star Liam Hemsworth posted this adorable pic in December of 2019 and we aren't the only one who call Thirst Trap on it, because Hemsworth's co-star in Isn ...