Centrosome and Centrioles - Practice Questions & MCQ

Centrosome and Centrioles

Structure:

• Centrosome is an organelle which is made up of two centrioles. 
• These organelles are mainly found in most of the animal cells. 
• Centrioles are also called diplosomes. 
• They are non-membranous organelles. 
• They are surrounded with pericentriolar material. 
• The centrioles are present inside a specialised cytoplasm called centrosphere or kinoplasm. 
• The centrosphere and centrioles are together called centrosomes. 
• Centrioles are composed of tubulin proteins. 
• There are 9 units of tubulin in the periphery and none in the centre, the arrangement becomes 9+0. 

Functions:

• Centrioles are mainly involved the cell division. 
• They form the spindle fibres for the attachment of the chromosomes and their distribution during the cell division. 
• They also take part in the  formation of cilia and flagella. 
• They help in the development of tail fibres of the sperm.