Microtubules are made up of by which protein? (Kerala PMT-2001) / » Biology solved MCQs / By admin Question: Microtubules are made up of by which protein? (Kerala PMT-2001) A. Tubulin B. Myosin C. Actin D. Durable protein Answer» a. Tubulin Note: The above multiple-choice question is for all general and Competitive Exams in India.