Here's a breakdown:

* During cell division (specifically mitosis and meiosis), centrioles:

* Organize microtubules: These are protein fibers that form the spindle fibers.

* Anchor the spindle fibers: This helps separate the chromosomes during cell division.

* Form the basal bodies of cilia and flagella: These structures help with cell movement.

Let me know if you'd like more details on any of these points!