What is the macromolecule that builds both cilia and flagella?

The macromolecule that builds both cilia and flagella is primarily tubulin, which forms microtubules. These microtubules are arranged in a specific pattern, typically a "9+2" arrangement in eukaryotic cells, providing structural support and enabling movement. Additionally, proteins such as dynein and kinesin play crucial roles in the movement of cilia and flagella by facilitating the sliding of microtubules against one another.