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 ] +

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 ] +

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter4: The Tissue Level Of Organization

Section: Chapter Questions

Problem 24RQ: Skeletal muscle is composed of very hard working cells. Which organelles do you expect to find in...

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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
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
Determine whether the following statements apply to microtubules, intermediate filaments, or actin filaments."a. Thinnest cytoskeletal filaments; are associated with the motor protein myosinb. Consist of proteins twisted together into a ropelike formc. Allow certain cells to “crawl” and change the shape and size of the celld. Consist of protein subunits surrounding a hollow coree. Help a cell to resist mechanical stressf. Grow from the cell’s centrosome"
Which of the following CORRECTLY describes a similarity when comparing actin filaments and microtubules? O Their motor proteins require ATP. O Their disassembly directly requires ATP. O Their assembly directly requires ATP. O Their assembly is faster at the plus end directly because of ATP.
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.
Skeletal muscle is composed of very hard working cells. Which organelles do you expect to find in abundance in skeletal muscle cell? nuclei striations golgi bodies mitochondria
In muscle, calcium moves from the cytoplasm to the sarcoplasmic reticulum by O active transport, ion channels using diffusion, pumps O diffusion, ion channels active transport, pumps
A melanosome (type of vesicle containing the pigment melanin) is transported towards the nucleus of the cell. The hydrolysis of ATP is involved with this movement. Identify the most likely motor protein and cytoskeletal filament involved with this transport.
10. The protein integrin binds to actin filaments and, by binding to proteins like fibronectins, connects to collagen. In this manner, integrin ______. (Choose all that apply) controls the permeability of the cytoplasmic membrane suspends organelles within the cytoplasm provides a direct linkage between the cytoskeleton and the extracellular matrix helps keep individual cells in place and connects adjacent cells to each other
hich of the following statements is true about actin: OActin is translated by free ribosomes O Dyneins move toward the minus end of actin filaments actin can bind to GTP O actin filament is stabilized by ADP-binding
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
Given the diagram, what motor protein transports vesicles that are about to utilize cis-Golgi v-SNARES? Rough ER cis face Golgi complex trans face MTOC Cell membrane CopyrightO2000 Pearson Educelion, Inc.publhing as Berjamin Cummings O cytoplasmic kinesin O axonemal dynein O cytoplasmic dynein O myosin II 0+0+