The drug cytocholasin is known to bind to the ends of actin fibers. Itdoes not affect striated muscle contraction, but it completelyinhibits motility and changes in cell shape in eukaryotic cells. Whatdo these findings suggest?

Striated muscles are used to perform voluntary actions. Muscles are composed of actin and myosin…

Answered: The drug cytocholasin is known to bind…

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter36: Digestion And Human Nutrition

Section: Chapter Questions

Problem 11SA

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Skeletal muscle is composed of very hard workingcells. Which organelles do you expect to find in abundancein skeletal muscle cell?a. nucleib. striationsc. golgi bodiesd. mitochondria
Actin and microtubules have polarity, intermediate filaments have no polarity. What is the main consequence of this difference?
Several types of cells use the actin cytoskeleton to power their locomotion across surfaces. How are different assemblies of actin filaments involved in locomotion?
What would be the consequence for actin filament assembly/disassembly if a mutation prevented actin’s ability to bind ATP? What would be the consequence if a mutation prevented actin’s ability to hydrolyze ATP?
Does skeletal muscle, like cardiac muscle, have gap junctions between adjacent cells? Why or why not?
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
Cofilin preferentially binds to older actin filamentsand promotes their disassembly. How does cofilin distin-guish old filaments from new ones?
How does a cell maintain theright amount of every component(organelles, molecules), and how doesit change these amounts as needed(for example, to greatly expand theendoplasmic reticulum when the cellneeds to produce large amounts ofsecreted proteins)?
After death, a person no longer makes ATP, so calcium stored in the sarcoplasmic reticulum diffuses down its concentration gradient into the muscle cytoplasm. This result is rigor mortis----an unbreakable state of muscle contraction that stiffens the body for a few days until muscles begin to decay. Explain why this contraction occurs.
Intermediate filaments are composed of?
how would myosin arrange the actin such that a virus could not enter the cell?
There are types of cytoskeleton fiber- intermediate filaments. Tell their structure and/or function.

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The drug cytocholasin is known to bind to the ends of actin fibers. It does not affect striated muscle contraction, but it completely inhibits motility and changes in cell shape in eukaryotic cells. What do these findings suggest?