NEET 2004 Biology question

ATPase enzyme needed for muscle contraction is located in -

(1)Troponin
(2)MyosinCorrect
(3)Actin
(4)Actinin

Answer: (2)

Solution

In the sliding-filament mechanism the globular head of the myosin molecule (heavy meromyosin) carries the ATP-binding site and has ATPase activity; hydrolysis of ATP provides the energy for formation of cross-bridges with actin and for the power stroke. Troponin is

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Question ID VK-089496