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Question

The binding of troponin to calcium in muscle cells exposes the binding site of

A
Tropomyosin
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B
Myosin
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C
ATP
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D
ADP
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E
Pi
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Solution

The correct option is B Myosin
  • Muscle contraction thus results from an interaction between the actin and myosin filaments that generates their movement relative to one another.
  • The molecular basis for this interaction is the binding of myosin to actin filaments, allowing myosin to function as a motor that drives filament sliding. Hence, The binding of troponin to calcium in muscle cells exposes the binding site of Myosin.
So, the correct answer is 'Myosin'.

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