[Campbell Biology P.164] Based on the text, what is the primary structural role of microfila... | Practice Question

Based on the text, what is the primary structural role of microfilaments in the cytoskeleton, in contrast to microtubules?

  • A: Microfilaments primarily bear tension (pulling forces), while microtubules primarily resist compression.
  • B: Both microfilaments and microtubules primarily resist compression.
  • C: Microfilaments form hollow tubes, whereas microtubules are thin solid rods.
  • D: Microfilaments are involved in flagellar movement, while microtubules are responsible for cell shape maintenance.

Explanation

The text explicitly states: 'In contrast to the compression-resisting role of microtubules, the structural role of microfilaments in the cytoskeleton is to bear tension pulling forces .'