centriole
one of the pair of cytoplasmic organelles that form the points of focus of the spindle during cell division
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
Centriole
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Centriole
A centriole in biology is a hollow cylindrical organelle found in most animal cells, and cells of fungi and algae though not frequently in plants.
Centriole Structure
A centriole is a small set of microtubules arranged in a specific way. There are nine groups of microtubules. When two centrioles are found next to each other, they are usually at right angles.
Centrioles
Found only in animal cells, these paired organelles are typically located together near the nucleus in the centrosome, a granular mass that serves as an organizing center for microtubules.
Centriole
Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system.
centrioles - structures in the cytoplasm from which the spindle apparatus forms.
centriole Paired cellular organelle which functions in the organization of the mitotic spindle during cell division in eukaryotes. PICTURE ...
Centrioles
Each centrosome contains a pair of centrioles.
Centrioles are built from a cylindrical array of 9 microtubules, each of which has attached to it 2 partial microtubules.
centriole
(sen-tree-ole) [Gk. kentron, center]
A structure in an animal cell, composed of cylinders of microtubule triplets arranged in a 9 + 0 pattern. An animal cell usually has a pair of centrioles, which are involved in cell division.
centriole - microtubule-based structure that divides prior to mitosis; with the pericentriolar material constitutes the centrosome it is associated with the poles of the spindle apparatus during karyokinesis.
Centrioles and Centrosome
The structure of centrioles is similar to that of basal bodies in that they have 9 triplets of microtubules. Centrioles occur in pairs; each one oriented at a right angle to the other.
Centriole (animal cells only): Each centriole is a ring of nine groups of fused microtubules. There are three microtubules in each group. Microtubules (and centrioles) are part of the cytoskeleton.
Centrioles at opposite poles
Chromosomes line up on the equator of the spindle
Centromeres (kinetochores) attach to spindle fibres
Kinetochores consist of microtubules and "motor" proteins which utilise ATP to pull on the spindle ...
centriole A minute cytoplasmic organelle usually found in the centrosome and considered to be the active division center of the animal cell; organizes spindle fibers during mitosis and meiosis. Same structure as basal body or kinetosome.
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 ...
2 Coincidently with or preceding these changes the centriole, which usually lies by the side of the nucleus, undergoes subdivision, and the two resulting centrioles, each surrounded by a centrosphere, ...
Animal cells (except for a group of worms known as nematodes) have a centriole. Plants and most other eukaryotic organisms lack centrioles.
The centrioles begin to migrate to opposite ends of the cell where they will serve as the organizing site for the mitotic spindle microtubules.
Aster microtubules originating around centrioles in dividing animal cells‚ from which the mitotic spindle eventually forms
(aster = star) ...
Chromatin in the nucleus begins to condense and becomes visible in the light microscope as chromosomes. The nucleolus disappears. Centrioles begin moving to opposite ends of the cell and fibers extend from the centromeres.
The string is the cell membrane, the pipe cleaners are the chromatids and the chalk is used to draw the spindle fibers and nuclear membrane, and the pinwheel macaroni is used to demonstrate centrioles(many different things can be used for this).
The primary microtubule organising center (MTOC) of animal cells, that divides prior to cell division. Each daughter MTOC acts as one pole of the spindle apparatus. The centrosome usually contains a pair of centrioles.
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Poles The two ends of a spindle where the microtubules converge and to which the chromosomes will eventually be pulled. They form around a structure known as a centriole.
 See also: Cell, Cells, Organ, Membrane, Division
  
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