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Centrioles


Definition: Centrioles are cylindrical structures, found in animal cells, that are composed of groupings of microtubules arranged in a 9 + 3 pattern. They help to organize the assembly of microtubules during cell division.
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Centrioles are important in the cell division process, organizing the mitotic spindle upon which the chromosomes are pulled apart. Some animal cells are able to divide their chromosomes without centrioles, for instance in female meiosis.
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Centrioles are important in the cell division process, organizing the spindle upon which the chromosomes are pulled apart. Some animal cells may be able to separate without centrioles. Centrioles assist the cell through the process of mitosis.
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Centrioles appear to be needed to organize the centrosome in which they are embedded.
Sperm cells contain a pair of centrioles; eggs have none.
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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.
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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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Plants and most other eukaryotic organisms lack centrioles. Prokaryotes, of course, lack spindles and centrioles; the cell membrane assumes this function when it pulls the by-then replicated chromosomes apart during binary fission.
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prophase: the first phase of mitosis; involves chromosomal condensation, nuclear membrane breakdown, and the migration of centrioles to opposite poles.
prophase I: the first phase of meiotic division, during which crossing over takes place.
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centrosome Minute body in cytoplasm of many plant and animal cells that contains one or two centrioles and is the center of dynamic activity in mitosis.
Centrum kentron = center.
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centriole
One of two structures in the center of animal cells, composed of cylinders of nine triplet microtubules in a ring. Centrioles help organize microtubule assembly during cell division.
Covered in Lab 5 Sexual Lifecycles and Meiosis ...
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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.
centromere ...
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Organelle: Any one of various particles of living substance bound within most cells, such as the mitochondria, the Golgi complex, the endoplastic reticulum, the lysosomes, and the centrioles.
By National Cancer Institute ...
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