Now, if it rotates clockwise, it will basically change direction. Now, let's move on to eukaryotic Flagella. So what exactly is the difference? So we see that the type of protein that essentially composes our prokaryotic Flagella is Flagellant. However, in the eukaryotic case, the protein filaments that compose flagella for eukaryotic cells are microtubules. So basically, the centrosome of our animal cell of our eukaryotic organism contains two centrioles.