Microtubules vs. microfilaments vs. intermediate filaments
Which cytoskeletal component forms the mitotic spindle and the core of cilia?
Answer B: explanation for every choice
A
Actin microfilaments drive muscle contraction, cell movement, and the cleavage furrow in cytokinesis.
B
Correct. Microtubules, made of tubulin, form the spindle, cilia, flagella, and tracks for vesicle transport.
C
Intermediate filaments, such as keratin, provide mechanical strength.
D
Myosin is a motor protein that moves along actin.
TakeawayMicrotubules: spindle, cilia, flagella, transport tracks.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb77.