S - Statement: The cytoskeleton is composed o | vedclass

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(B) The cytoskeleton is an elaborate network of proteinaceous filaments consisting of microtubules, microfilaments, and intermediate filaments present

Vedclass · Accepted Answer

$S$ and $R$ are both true, but $R$ is not the correct explanation of $S$.

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(B) The cytoskeleton is an elaborate network of proteinaceous filaments consisting of microtubules, microfilaments, and intermediate filaments present in the cytoplasm.Thus, statement $S$ is correct.Microtubules are indeed hollow, cylindrical structures composed of polymerized globular protein subunits called tubulin ($\alpha$ and $\beta$ tubulin).Thus, statement $R$ is correct.However, the reason $R$ describes the structure of microtubules specifically, whereas statement $S$ describes the composition of the cytoskeleton as a whole. Therefore, $R$ does not explain why the cytoskeleton is composed of these three specific types of filaments.Hence, both are true, but $R$ is not the correct explanation of $S$.

$S$ - Statement: The cytoskeleton is composed of three types of filaments: microfilaments, microtubules, and intermediate filaments.
$R$ - Reason: Microtubules are hollow tubes made of the globular protein tubulin.

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$S$ - Statement: The cytoskeleton is composed of three types of filaments: microfilaments, microtubules, and intermediate filaments.$R$ - Reason: Microtubules are hollow tubes made of the globular protein tubulin.