Substance from which microtubules are made

Question

Name the substance from which microtubules are made? In which structures and cellular processes do microtubules contribute?

Answer 1

Microtubules are made up of consecutive dimers of the protein tubulin (each and every dimer has an alpha and beta tubulin related). Microtubules contribute in cell division, they are constituents of flagella and cilia and they also make the centrioles.