Which of the following statements applies to all three major classes of cytoskeletal polymers (microtubules, actin filaments and intermediate filaments)? They have intrinsic polarity They assemble from protein subunits synthesized on free polyribosomes They add subunits only at their ends They are involved in cell motility Their constituent proteins are tissue specific

Which of the following statements applies to all three major classes of cytoskeletal polymers (microtubules, actin filaments and intermediate filaments)? They have intrinsic polarity They assemble from protein subunits synthesized on free polyribosomes They add subunits only at their ends They are involved in cell motility Their constituent proteins are tissue specific

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 1TYK: In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the...

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Which of the following statements regarding cytoskeletal filaments is FALSE? Microtubules will rapidly disassemble in response to a drop in the ATP concentration. G-actin monomers and alpha-tubulin/beta-tubulin dimers assemble into filaments in their ATP-bound and GTP-bound forms, respectively. Microtubules are stabilized by microtubule-binding proteins, such as Tau. Actin-binding proteins allow F-actin to assemble in cells in many different ways. Hydrolysis of ATP and GTP changes the conformation of the subunits once they are incorporated into actin filaments and microtubules, respectively.
Indicate which type of cytoskeletal fiber is represented in the following schematic drawings of an animal cell. Microtubules O Intermediate filaments Microfilaments Cellulose fibers None of the above
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Integrins are important in cell crawling because they anchor the leading edge of the cell to the surface it is moving over they are receptors for diffusible chemical ligands that determine the direction the cell will move in they cross-link actin filaments to microtubules and intermediate filaments of the cytoskeleton they serve as nucleating sites for polymerization of new actin filaments
Cytoskeleton proteins that form cleavage furrow during cytokinesis is: intermediate filaments, actin filaments, myosin filaments, vimentin filaments, or microtubules?
There are types of cytoskeleton fiber- intermediate filaments. Tell their structure and/or function.
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Put the following in order of size from smallest to largest microtubules sarcomere intermediate filaments microfilaments dynien
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Which of the following is a feature common to all three components of the cytoskeleton?