Microtubules are hollow, cylindrical, non contractile membraneless, cy – InterviewSolution

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1.	Microtubules are hollow, cylindrical, non contractile membraneless, cytoskeletal structure of 250 Å diameter. These are composed of sulphur rich tubulin protein and arise from nucleating centres like kietochore, basal body, massules of centrioles etc. This tubulin occurs inA. 11 longitudinal protofilamentsB. 13 protofilamentsC. 2 + 9 protofilamentsD. 0+ 9 protofilaments
Answer» Correct Answer - B

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