NEET Zoology Muscle Contraction MCQ Question
Which protein in the muscle fibre masks the active binding sites for myosin on the actin filaments in the resting state?
Troponin
Tropomyosin
Myosin
Actin
Correct Answer
Detailed Explanation
In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments, preventing contraction until calcium ions are released.
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