Multiple Choice
During mitosis, what cellular structure is primarily responsible for moving chromosomes to opposite poles of the cell?
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15. Cytoskeleton and Cell Movement
Microtubules and Cell Division
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In mitosis, what is the primary role of spindle fibers (microtubules) during metaphase and anaphase?
A
They form the cleavage furrow by contracting actin and myosin to divide the cytoplasm.
B
They synthesize new nuclear envelopes around the separated chromosomes at the end of mitosis.
C
They replicate the cell's DNA to ensure each daughter cell receives an identical genome.
D
They attach to kinetochores and separate sister chromatids by pulling them toward opposite poles of the cell.
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