Intermediate filaments help protect animal cells from mechanical stress because - Filaments remain independent of other cytoskeletal elements and keep the mechanical stress away from other cellular components. O Filaments directly extend from the interior of the cell to the extracellular space and into the next cell, linking one cell to the next, helping to distribute locally applied forces. O Filaments in each cell are indirectly connected to the filaments of a neighboring cell through the desmosome, creating a continuous mechanical link between cells. O Filaments make up the desmosome junctions that connect cells; these junctions are more important than the internal network of filaments for protecting cells against mechanical stress.

Intermediate filaments help protect animal cells from mechanical stress because - Filaments remain independent of other cytoskeletal elements and keep the mechanical stress away from other cellular components. O Filaments directly extend from the interior of the cell to the extracellular space and into the next cell, linking one cell to the next, helping to distribute locally applied forces. O Filaments in each cell are indirectly connected to the filaments of a neighboring cell through the desmosome, creating a continuous mechanical link between cells. O Filaments make up the desmosome junctions that connect cells; these junctions are more important than the internal network of filaments for protecting cells against mechanical stress.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter8: Muscle Physiology

Section8.1: Structure Of Skeletal Muscle

Problem 2CYU

See similar textbooks

Similar questions

Which of the following describes an F-actin microfilament? A flexible, helical filament composed of two strands assembled from G-actin 13 protofilaments composed of heterodimers with a hollow core a flexible filament composed of 13 interwoven protofilaments Eight tetramers twisted into a rope-like filament
Intermediate filaments are distinct from microtubules in all of the following EXCEPT: intermediate filaments are more dynamic. intermediate filaments do not have associated motor proteins. intermediate filaments do not need ATP to assemble. intermediate filaments are distinct from microtubules in all of these ways. O intermediate filaments are not directional. * Previous
Addition of which of the following would increase the rate of actin depolymerization on the minus end of the filament by dissociating ADP-actin? Othymosin-b4 O cofilin O ATP-G-actin O profilin O Cap Z
Select the correct description explaining the assembly of intermediate filaments. O The process requires ATP binding to an intermediate filament protein - two dimers make a tetramer, then association of 8 tetramers form a filament. The process requires GTP binding to an intermediate filament protein-two dimers make a tetramer, then association of 8 tetramers form a filament. O No ATP/GTP binding to an intermediate filament protein required - two dimers make a tetramer, then association of 8 tetramers form a filament. Formation of a triple-helix, as seen in collagen, would be required for the assembly of intermediate filaments.
Actin filaments in a test tube: O a. undergo disassembly if the concentration of free ATP-bound actin monomers is very high and latrunculin is added O b. rapidly grow if the concentration of free ATP-bound actin monomers is very high and a latrunculin is added O c. undergo treadmilling if the concentration of free ATP-bound actin monomers is intermediate and phalloidin is added O d. rapidly grow if the concentration of free ATP-bound actin monomers is intermediate and cytochalasin is added
Actin filaments, microtubules, and bacterial flagella are all built from small subunits. Describe three advantages of assembling long filamentous structures from subunits rather than from single, long proteins.
Which of the following molecular motors is known to travel in an anterograde direction along microtubules? myosins kinesins myosins and dyneins dyneins
Match the following Actin filaments Intermediate filaments Microtubules [Choose ] Most concentrated just under the cell membrane and help maintain the shape of cellular projections ✓ Support cell shape and fix organelles in place Act as track for organelles and other materials to move Most concentrated just u [Choose ]
Discuss the following statement: “if plant cells contained intermediate filaments to provide the cells with tensile strength, their cell walls would be dispensable.”
You are studying actin polymerization in the lab. You have Tube 1 with cell extract and ATP, and Tube 2 with cell extract and non- hydrolyzable ATP. Assuming both ATP and non-hydrolyzable ATP bind actin monomers with similar affinities, which of the following would observe in the two tubes? Select all that apply The average length of an actin filament in Tube 1 is longer than the average length of an actin filament in Tube 2 The average length of an actin filament in Tube 2 is longer than the average length of an actin filament in Tube 1 Polymerization of actin filaments is inhibited in presence of non-hydrolyzable АТР Depolymerization of actin filaments is inhibited in presence of non-hydrolyzable АТР
What is not a similarity between motility of cilia/flagella and skeletal muscle? Group of answer choices: Both have cytoskeletal fibers arranged in a ring pattern Both involve motor proteins connected to a cytoskeleton "track" Both can produce movement Both require ATP hydrolysis
What is the rate-limiting step in the formation of an actin filament? Addition of actin monomers to an existing filament None of the above Initiation, or nucleation Cross-linking