Cilia and flagella move due to energy provided by the enzymatic breakdown of ATP by dynein.

Here's a breakdown:

* Dynein is a motor protein that uses the energy from ATP hydrolysis to generate movement.

* ATP (adenosine triphosphate) is the primary energy currency of cells.

* Hydrolysis is the breakdown of a molecule using water.

Dynein works by binding to microtubules within the cilia and flagella. The hydrolysis of ATP causes a conformational change in dynein, causing it to "walk" along the microtubule. This "walking" motion causes the cilia or flagella to bend and move.

Let me know if you'd like more details about the structure of cilia and flagella or the specific mechanisms of dynein!