Multiple Choice
During mitosis, which structure is directly responsible for moving chromosomes by attaching to kinetochores and generating forces that separate sister chromatids?
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15. Cytoskeleton and Cell Movement
Microtubules and Cell Division
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During eukaryotic cell division, what structure directly moves chromosomes toward opposite poles of the cell?
A
Actin microfilaments in the contractile ring that pinch the cell into two during cytokinesis
B
Spindle microtubules (kinetochore microtubules) that attach to kinetochores and shorten to pull sister chromatids apart
C
Centrioles that bind directly to chromosomes and drag them to opposite poles
D
Intermediate filaments that form the nuclear lamina and pull chromosomes during anaphase
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