Centrosomes and Centrioles Flashcards
1
Q
What are centrosomes?
A
centrosomes are organelle containing two cylinder structures called centrioles
these centrioles lie perpendicular to each other.
2
Q
What are they surrounded by?
A
they are surrounded by amorphus pericentriolar materials
3
Q
What are centrioles made of?
A
Centrioles are made up of 9 evenly spaced peripheral fibrils, triplets, they connect adjacent triplets
4
Q
what are peripheral fibrils made of?
A
peripheral fibrils are made of tubulin protein
5
Q
What is hub?
A
the centre of proximal region of centriole is proteinaceous and it is known as hub, it connects the tubules of peripheral triplets
6
Q
and how does it connect the tubules of peripheral triplet?
A
by radial spokes which are made of special proteins
7
Q
Functions of centrioles
A
- forms the body of cilia and flagella
- makes spindle fibres which later turns into spindle apparatus for cell division of animals
