Eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are . 2. many cell organelles, most notably the nucleus, are anchored by which are assembled from a diverse class of proteins. 3. centrosomes are sites where protein dimers assemble into . 4. the extension of pseudopodia in amoeba is due to the regulated assembly and destruction of . 5. the only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the intermediate filaments. 6. during muscle contractions, myosin motor