12 F-actin filaments:are composed of polymerized G-actin monomers wound around each other in a helix.are composed of four linear strands.are oriented similar to DNA, with strands helical and antiparallel to one another.are composed of G-actin dimers.O polymerize at the same rate in both directions from both ends of the filament.

F-actin filaments are composed of a polymer chain of monomer globular actin or G-actin subunits which are rotated at an angle of 166.15° around the axis, giving it the helical shape. They are a part of contractile system of muscles and non-muscle cells.Answer is Option A - are composed of polymerized G-actin monomers wound around each other in a helix.

Answered: F-actin filaments:

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F-actin filaments:

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

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Question

F-actin filaments:
are composed of polymerized G-actin monomers wound around each other in a helix.
are composed of four linear strands.
are oriented similar to DNA, with strands helical and antiparallel to one another.
are composed of G-actin dimers.
O polymerize at the same rate in both directions from both ends of the filament.

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