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Centriole

Definition

noun, plural: centrioles

A self-replicating, small, fibrous, cylindrical-shaped organelle, typically located in the cytoplasm near the nucleus in cells of most animals. It is involved in the process of nuclear division.


Supplement

The centriole contains nine pairs of peripheral microtubules arranged orthogonally so as to form the wall of the cylinder. The centrioles are absent in higher plants and most fungi.


Word origin: New Latin centriolum, diminutive of Latin centrum, center.

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Centriole replication

Hey all! 2 quick questions on centriole replication. They lack DNA but still replicate. Doesn't this blow a hole in the argument that DNA is necessary for replication (meiosis/mitosis)? Also, in the case centrioles are the exception that ...

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by ncolstin
Thu Jan 12, 2012 4:54 am
 
Forum: General Discussion
Topic: Centriole replication
Replies: 0
Views: 1026

Re: function of a centriole?

Centriole is a structure found in eukaryotic animal cells. Plant cells and fungi do no contain centrioles. Centriole is the part of the cell, which acts as the center for producing microtubules, which are the component of ...

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by sara135
Tue Jul 12, 2011 11:05 am
 
Forum: Cell Biology
Topic: function of a centriole?
Replies: 22
Views: 81359

Question on Chromatids

... cell cycle begins and they merge to become one nucleus. Doubling of the DNA then occurs, and centromeres are made to attach to the asters of the centrioles (mitotic spindle), which will guide the chromatids/sister chromatids during the cell cycle. Since the DNA is replicated semi-conservative, ...

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by kolean
Tue Dec 21, 2010 3:04 pm
 
Forum: Cell Biology
Topic: Question on Chromatids
Replies: 1
Views: 2117

Re: Prokaryotic and Eukaryotic cells

... cell, but none on the organelles in a prokaryotic cell. The organelles I do not know about in eukaryotic cells are... Lysosome Peroxisome Centriole Centrosome Secretary Vesicle cell membrane Vacuole Chloroplast Cytoskeleton In Prokaryotic cells... Storage Granules Endospore Capsule Outer ...

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by srk17
Sat Jul 17, 2010 8:25 am
 
Forum: General Discussion
Topic: Prokaryotic and Eukaryotic cells
Replies: 11
Views: 7836

Re: function of a centriole?

Here's an excellent resource on the possible role of centrioles in cellular intelligence: http://www.basic.northwestern.edu/g-buehler/cellint0.htm From what I know about the topic, a cell can divide without centrioles but cannot develop into an animal due to loss of migration behavior that makes the...

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by GaryGaulin
Fri Jan 29, 2010 7:12 pm
 
Forum: Cell Biology
Topic: function of a centriole?
Replies: 22
Views: 81359
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