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Which of the following metal ions play an important role in muscle contraction?

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Which of the following metal ions play an important role in muscle contraction?

(a) K+ 

(b) Na+  

(c) Mg2+ 

(d) Ca2+

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The correct option is: (d) Ca2+

Explanation:

Calcium is an essential element for the contraction of muscles. In the presence of calcium ions and energy from ATP, actin and myosin (contractile proteins) interact forming actomyosin which causes contraction of muscles.

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