The cytoskeleton of a eukaryotic cell plays a major role in organizing the structures and activities of the cell. The cytoskeleton consists of three main types of fibers: microfilaments, intermediate filaments, and microtubules. The three types of fiber differ in size, composition, and the functions they perform in the cell.
1) In 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 ___.
6) During muscle contractions, myosin motor proteins move across tracks of ___.