A) Troponin
B) Myosin
C) Trypsin
D) Actin
Correct Answer: B
Solution :
Myosin protein forms anisotropic band and its centres forms 'M' line \[i.e.\], muscle fibre itself consists of myosin filaments. The cross bridges present in myosin molecules are enzymatic in nature and always tends towards the centre of myosin filament thus causes the contraction of muscle fibre.
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