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ATP binding site is located on/associated with

1. Troponin
2. Tropomyosin
3. Head part of meromyosin
4. Tail part of myosin

Correct answer: Head part of meromyosin

Solution

The ATP binding and ATPase site is located on the head of myosin (the heavy meromyosin portion). This head region forms cross-bridges with actin and uses ATP to drive muscle contraction.

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