Organelles

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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Organelles
Main article: Organelle
The human body contains many different organs, such as the heart, lung, and kidney, with each organ performing a different function.
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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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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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ciliary organelles Organelles of specialized function formed by the fusion of cilia.
ciliates A group of protozoans that have cilia.
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A few large organelles probably originated from endosymbiont bacteria:
chloroplast
mitochondrion
Other organelles include: ...
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cytoplasmic organelles that function in oxidative metabolism and energy production; they carry their own DNA and are important in certain maternally inherited disorders ...
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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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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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chloroplasts Chlorophyll-containing photosynthetic organelles in some eukaryotic cells. chromatin A filamentous complex of DNA, histones, and other proteins, constituting the eukaryotic chromosome.
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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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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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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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The genetic material found in mitochondria, the organelles that generate energy for the cell. Not inherited in the same fashion as nucleic DNA
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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Cytoplasm the fluid and organelles within a cell
(cyto = cell; plasm = formed molded)
D
CharlesDarwin person who published The Origin of Species in 1859 ...
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plastid -- Any of several pigmented cytoplasmic organelles found in plant cells and other organisms, having various physiological functions, such as the synthesis and storage of food.
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One of a family of closely related plant organelles, including chloroplasts, chromoplasts, and amyloplasts (leucoplasts).
platelet
(plate-let) [Gk. platus, flat] ...
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The genetic material of the mitochondria, the organelles that generate energy for the cell.
explained:
Listen to a detailed explanation.
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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,
Your Guide to Biology.
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Mitochondria are small round or rod-like organelles that are involved in cellular respiration and found in the cytoplasm of plant and animal cells. Each mitochondrion may contain 5 to 10 circular pieces of DNA.
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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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cytosol - contents of the main compartment of the cytoplasm, excluding membrane-bounded organelles such as endoplasmic reticulum and mitochondria.
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The material between the nuclear and cell membranes; includes fluid (cytosol) organelles, and various membranes.
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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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