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    Question

    Which mineral is most important for muscle contraction and

    nerve impulse transmission?
    A Iron Correct Answer Incorrect Answer
    B Potassium Correct Answer Incorrect Answer
    C Calcium Correct Answer Incorrect Answer
    D Zinc Correct Answer Incorrect Answer

    Solution

    Calcium plays a vital role in both muscle contraction and nerve impulse transmission. In muscles, calcium ions bind to regulatory proteins, enabling contraction. In nerves, calcium is essential for the release of neurotransmitters at synapses, facilitating communication between nerve cells.

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