Question

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

• A. Tropomyosin
• B. Myosin
• C. ATP
• D. ADP
• E. $P_i$

Answer 1

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'.