Centrioles

by whitee2018
Last updated 7 years ago

Discipline:
Science
Subject:
Biology
Grade:
9

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Centrioles

CENTRIOLES

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Inside The Cell

-Plant cells don't contain centrioles since they are able to form a circular loop of microtubles before prophase starts. These are known as preprohase bands.-Centrioles can only be seen when cells are dividing.

What exactly is a centriole?- Centrioles are rings of 9 groups of fused microtubules located near the nucleus of an animal cell.-They are cylindrically shaped, and normally arranged in a 9x3 pattern. -In the cell, they work in pairs that are perpendicular to each other.INTERACTIVE ANIMATION

During cell division:-During the prophase, two pairs of centrosomes relocate to opposing sides of the nucleus.-Tubular polymers of tubulin known as microtubles begin to grow out of these centrosomes, and attach themselves to the chromosomes. This forms the mitotic spindle.-The mitotic spindle slowly begins separating the chromosomes.

The Gist

Function

Did You Know?

Important Terms

Microtube: Hollow structure built of proteins known as tubulinsCentrosomes: Organelles serving as the microtubule organzing center, or MOC.Prophase: First and longest phase of Mitosis in which the genetic material inside the nucleus condenses and chromosomes become visibleMitotic Spindle: Macromolecular machine that segregates chromosomes to two daughter cells

ReferencesCells AliveBiology 4 KidsGenetics Home ReferenceYoutube.commicro.magnet.fsu.eduNCBI

Centrioles are like file folders that help to organize cell division.


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