alleryStart learning →What diameter is given for microtubules, the widest cytoskeletal element?
AAbout 25 nanometers
BAbout 15 nanometers
CAbout 50 nanometers
DAbout 5 nanometers
Answer & Solution
Correct answer: A. About 25 nanometers
1. Microtubules are small hollow tubes and are the widest components of the cytoskeleton.
2. Their diameter is about 25 nanometers.
3. That is wider than the 8 to 10 nanometers of intermediate filaments and the 7 nanometers of microfilaments.
4. The figure asked for is about 25 nanometers.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.5 The Cytoskeleton_
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