The microtubules in the cytoskeleton are made up of protein:
Correct answer: C. Tubulin
- A. Tropomyosin
- B. Myosin
- C. Tubulin
- D. Actin
Explanation
Tubulin is the protein that makes up microtubules, which are hollow tubular structures in the cytoskeleton of cells. Microtubules are involved in various cellular functions, including cell shape and support, intracellular transport of vesicles and organelles, and cell division. Tubulin forms long chains that polymerize to create the hollow cylindrical structure of microtubules.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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