Multiple choice

Buckling by multi-piconewton compressive forces in a living cell is resisted by ________________.

  1. myofibril

  2. microtubules

  3. microfilaments

  4. intermediate filaments

  5. spindle pole body
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Microfilaments are the thinnest filaments of the cytoskeleton, a structure found in the cytoplasm of eukaryotic cells. These linear polymers of actin subunits are flexible and relatively strong, resisting buckling by multi-piconewton compressive forces and filament fracture by nanonewton tensile forces.  

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