Login

Explain the structure of centriole with the help of diagram

Dear student,

Centrioles are small organelle which are made up of proteins called tubulin. Centriole consist of microtubules (made up of tubulin protein) in 9+3 arrangements. Three mictrotubules (triplets) are repeated nine times arranged circularly forming 9+3 arrangements. Centrioles are found in most eukaryotes. Centrioles helps in the organization of spindle fibre during mitotic and meiotic cell division. Centriole replicates during interphase therefore a pair of centrioles perpendicular to each other is found  in the centrosome(consisting of  two centrioles and pericentriolar material).

Regards

  • 0
View Full Answer
kihgfrty
  • -1
mnm
  • 1
  • At the anaphase and telophase stages the centrioles appear as two cylindrical structures. They are open at both the ends and are located at right angles to each other.
  •  Each of the centriole is made up of nine triplet fibers and these triplet fibers are arranged in a circular manner that gives it a barrel-shaped appearance. Within the centrosome a mother centriole and the daughter centriole are arranged at perpendicular angles to each other. These two centrioles are tightly attached to each other and are surrounded by dense matrix called pericentriolar material. 
  • The mother centriole is a mature structure, it has additional appendages and is involved in anchoring and positioning of the microtubules. Comparatively the daughter is a young and immature structure. 
  • The length of the centriole is about 3,000 to 5,000 A and it is about 1,500 to 1,800 Ã… in diameter. 
  • 1
What are you looking for?