alleryStart learning →Which two cytoskeletal elements can disassemble and reform quickly?
AIntermediate filaments and microtubules
BMicrofilaments and intermediate filaments
COnly the intermediate filaments
DMicrofilaments and microtubules
Answer & Solution
Correct answer: D. Microfilaments and microtubules
1. Microfilaments can depolymerize and reform quickly, which lets a cell change shape and move.
2. Microtubules share that behaviour and can dissolve and reform quickly too.
3. Intermediate filaments are purely structural and bear tension, so rapid turnover is not their character.
4. Any answer that includes intermediate filaments therefore fails.
5. The quick-turnover pair is microfilaments and microtubules.
6. Naming only the intermediate filaments is wrong twice over, since it picks the one element that does not turn over quickly and drops both that do.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.5 The Cytoskeleton_
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