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