THIS USER ASKED 👇
1. In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are microtubules. 2. Many cell organelles, most notably the nucleus, are anchored by microtubules which are assembled from a diverse class of proteins. 3. Centrosomes are sites where protein dimers assemble into microfilaments. 4. The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of microtubules. 5. The only cytoskeletal fibers not associated with intracellular movement or whole cell locomotion are the intermediate filaments. 6. During muscle contractions, myosin motor proteins move across tracks of microtubules.
THIS IS THE BEST ANSWER 👇
1) In eukaryotic flagella, the fibers are microtubules that slide around each other due to the activity of human proteins.
2) Many cell organs, especially the nucleus, are anchored by intermediate filaments composed of a different class of proteins.
3) Centrosomes are sites where protein dimers converge into microtubules.
4) The spread of pseudopodia in amoeba is due to regulated assembly and destruction of microfilm.
5) The intermediate filaments are the cytoskeletal fibers that are not involved in intracellular movement or total cell locomotion.
6) During muscle contractions, myosin motor proteins move across traces of microfilm.
The cytoskeleton is a very important feature of the cell, and is composed of three different structures: microtubules, intermediate filaments, and microfilaments.
Microtubules are hollow tube-shaped structures that give the cell a shape. Microtubules also participate in cell motility by providing a way for the organs to move through.
Intermediate filaments are the only ones that do not participate in cell motility: their main function is to provide mechanical support to the plasma membrane.
Motofilaments are an integral part of cell motility, and also combine with myosin (protein) to produce muscle contraction. Microfilms give the cell the ability to grow pseudopods.