alleryStart learning →Which task is performed by microtubules?
APulling chromosomes to opposite poles
BSealing the gaps between skin cells
CBreaking down worn-out organelles
DStoring calcium for muscle contraction
Answer & Solution
Correct answer: A. Pulling chromosomes to opposite poles
1. Microtubules help the cell resist compression.
2. They also provide a track along which vesicles move through the cell.
3. They pull replicated chromosomes to opposite ends of a dividing cell.
4. Sealing between cells is the work of tight junctions and calcium storage that of the smooth ER, so neither belongs here.
5. Chromosome separation is the microtubule task.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.5 The Cytoskeleton_
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