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Question

Enzyme ATPase required for muscle contraction is located in

A
Actin
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B
Tropinin
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C
Actinin
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D
Myosin
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Solution

The correct option is D Myosin
During muscle contraction, myosin cross bridges the heads. It contains an actin binding protein as well as an ATPase, which is activated by Ca2+ and Mg2+ ions.
Hence ATPase enzyme is located in myosin.

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