Plant cells and fungi do not have centrosomes. They have other structures that are responsible for building microtubules, building and organizing microtubules. Now, every single one of our centrosome in any given Eukaryotic animal cell consists of a pair of two centrioles that are oriented at a 90 degree angle with respect to one another. And these two centrioles are basically embedded in hundreds of proteins. So let's suppose this is our Eukaryotic animal cell. So this is our nucleus.