Organelle

organelle
noncellular structure in a cell that serves a specific function
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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organelle - a specialized part of a cell; analogous to an organ; "the first organelle to be identified was the nucleus"
Synonyms: cell organ
By Wordnet Dictionary ...
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A few large organelles probably originated from endosymbiont bacteria:
In plants, chloroplasts and other plastids, such as leucoplasts, amyloplasts, Etioplasts, Elaioplast, rhodoplasts, and chromoplasts.
mitochondria (in almost all eukaryotes) ...
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Organelle
In cell biology, an organelle is one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell.
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Organelles probably evolved from endosymbionts by gradual loss of genes to the nucleus. A possible scenario: ...
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organelles Cell components that carry out individual functions; e.g., the cell nucleus and the endoplasmic reticulum. Subcellular structures (usually membrane-bound and unique to eukaryotes) that perform some function, e.g.
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organelle
(or-guh-nel) [Gk. organon, instrument, tool]
One of several formed bodies with a specialized function, suspended in the cytoplasm and found in eukaryotic cells.
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organelles: microscopic bodies within the cytoplasm that perform distinct functions.
osmosis: the movement of water molecules across a membrane from a region of high concentration to a region of low concentration.
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organelle -- n. A membrane-bound structure in a eukaryotic cell that partitions the cell into regions which carry out different cellular functions, e.g., mitochondria, endoplasmic reticulum, lysosomes.
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organelle A body within the cytoplasm of eukaryotic cells; several different types of organelles occur, each with a specialized function such as the chloroplast, which functions in photosynthesis.
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An organelle containing any plant pigment other than chlorophyll. The pigments may be yellow, orange, or red. Chromoplasts are usually most numerous in the cells of flowers.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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Organelle the "body parts" within a cell
(organum = an instrument implement engine; -elle = small)
OrientalRealm the biogeographical realm consisting of India and southeast Asia
(orient(al) = rising east) ...
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Cell organelles
Identify structure and function for a variety of organelles
- ...
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other organelles, such as mitochondria, that have ceased functioning properly and have been engulfed in autophagosomes
food molecules or, in some cases, food particles taken into the cell by endocytosis ...
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Cellular organelle that is the site of protein synthesis
explained:
Listen to a detailed explanation.
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A complex organelle (composed of proteins plus rRNA) that catalyzes translation of messenger RNA into an amino acid sequence. Ribosomes are made up of two non-identical subunits each consisting of a different rRNA and a different set of proteins.
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nucleus
An organelle of eukaryotic cells that is bounded by a nuclear membrane and contains the chromosomes whose genes control the structure of proteins within the cell.
Covered in: Lab 3 Cell Biology
O ...
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Highly pleiomorphic organelle of eukaryotic cells that varies from short rod-like structures present in high number to long branched structures. Contains DNA and mitoribosomes.
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Mitochondria
Small organelles in the cell where energy from electron transport between molecules is converted into energy for biological activity. Mitochondria also possess their own genome, which is inherited maternally.
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Organelle. A cell structure that carries out a specialized function in the life of a cell. Origin of replication. The nucleotide sequence at which DNA synthesis is initiated. OSHA. See Occupational Safety and Health Administration.
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peroxisome Membrane-bounded organelle in the cytoplasm of eukaryotic cells functioning in the destruction of proteins and characterized by peroxide-forming enzymes. pH The negative logarithm of the hydrogen ion concentration in an aqueous solution.
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Centrioles - essential tubular organelles found near the nucleus in pairs that aid in cellular division
Chlorophyll - the green material found in chloroplasts that is active in photosynthesis ...
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The mitochondrial permeability transition (mPT) involves the opening of a non-specific pore in the inner membrane of mitochondria, converting them from organelles whose production of ATP sustains the cell, to instruments of death.
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Chloroplasts and mitochondria are organelles within eukaryotic cells (cells of organisms other than bacteria, which do not have organelles). These organelles have their own genetic material.
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GOBASE organelle genome database
Harvard Department of Molecular and Cellular Biology
HGVbase (Human Genome Variation database) lists human intra-genic (promoter to transcription end point) DNA sequence polymorphisms.
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This view, championed by Lynn Margulis, speculates that these ATP-producing organelles were once free-living prokaryotes that were engulfed by a proto-eukaryote - an idea now strongly supported.
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An organism lacking a nuclear membrane and certain organelles such as mitochondria. Refers to both Bacteria and Archae. This term was used synonymously with bacteria before the differences between Bacteria and Archae were understood.
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acrosomal vesicle - membrane-bound organelle in the head of a sperm that is derived from the golgi apparatus; the vesicle containing enzymes that digest proteins and complex sugars in the outer coverings of an egg.
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Golgi apparatus - membrane-bounded organelle in eucaryotic cells where the proteins and lipids made in the endoplasmic reticulum are modified and stored.
hydrogen bond - bonds formed by polarized molecules (+ -), i.e. water.
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Prokaryotic cells do not have a true nucleus. They have few organelles, and have no membrane-bound organelles. In cyanobacteria, the cell membrane folds inward in a number of places allowing for the attachment of enzymes.
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Definition: All of the contents outside of the nucleus of a membrane bound cell. This includes organelles and the cytosol.

From Regina Bailey,
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Endoplasmic reticulum: A specialized membranous organelle within eukaryotic cells responsible for synthesis of membrane-inserted proteins, and for proteins to be exported of proteins to the cell surface or beyond.
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Chloroplast. In eukaryotic organisms, the cellular organelle in which photosynthesis takes place ...
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Microtubules act as a scaffold to determine cell shape, and provide a set of "tracks" for cell organelles and vesicles to move on.
Microtubules also form the spindle fibers for separating chromosomes during mitosis.
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The term introduced by Brown (1833) for the more or less spherical structure which occures in cells and stains deeply with basic dyes. The cellular organelle in eukaryotes that contains the genetic material.
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kytos - a hollow vessel, now often taken to mean a cell; Gr. plasma - anything formed or moulded]. A jelly-like material bounded by the plasma membrane of the cell, containing organelles (excluding the nucleus) and providing a medium for metabolic ...
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Structure of life
Schematic of typical animal depicting the various and structures
Enlarge
Schematic of typical animal cell depicting the various organelles and structures ...
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eukaryotes with a nucleus and rod shaped chromosome but no mitochondria or plastid, thus believed to be the intermediate stage between prokaryotes and eukaryotes. They are also used as evidence for the evolution of nucleus before the organelles.
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Mitochondrial DNA -- the mitochondrial genome consists of a circular DNA duplex, with 5 to 10 copies per organelle. Mitosis -- nuclear division.
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