Allthe statements regarding muscle fibres are correct except one -
- ATropomyosin is formed by the polymeristation of globular proteins and is wrapped around the f-actin.
- BDuring relaxation of muscle, the troponin component masks the active sites for the myosin head.
- CThe duration of twitch can vary in different muscle fibres.
- Dthe globular head is in active Mg** dependent ATPase enzyme.
✓ Correct answer: A
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