There are three primary types of fibers in the cytoskeleton and out of all the options, B. Macrotubules are not in the cytoskeleton.
The three types of fibers in the cytoskeleton are:
- Microtubules - composed of protein tubulins and are useful in locomotion
- Microfilaments - composed of the protein actin and are used for cytokinesis
- Intermediate filaments - these help cells by providing tensile strength
All these are in the cytoskeleton and serve various functions apart from the macrotubules. We can therefore conclude that the cytoskeleton does not contain any macrotubule fibers.
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