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Question

The contractile protein of skeletal muscle having ATPase activity is

A
α-actinin
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B
Troponin
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C
Tropomyosin
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D
Myosin
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Solution

The correct option is D Myosin
Myosin is a molecular motor which converts the chemical energy into directed movement. The ability of the myosin to utilize chemical energy is because of it's ATPase activity. It causes the hydrolysis of ATP and utilizes the energy released from the hydrolysis of anhydride phosphate to cause muscle contraction. Thus, the correct answer is option D.

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