Question:
Identify the correct statement related to calcium ions in muscle contraction
Identify the correct statement related to calcium ions in muscle contraction
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Calcium ions play a crucial role in muscle contraction by interacting with troponin and enabling myosin-actin interaction.
Updated On: Mar 18, 2026
- Detaches the myosin head from the thin filament
- Binds to troponin to remove the mask of active sites of actin for myosin
- Activate the myosin ATPase by binding to it
- Prevents the formation of bonds between myosin and actin
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The Correct Option is B
Solution and Explanation
Calcium ions bind to troponin in the muscle fibers, which causes a conformational change that removes the masking of active sites on actin.
This allows myosin heads to bind to actin, initiating muscle contraction. Therefore, statement (2) is correct.
Final Answer:
Binds to troponin to remove the mask of active sites of actin for myosin.
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