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Question

The most important mineral for blood coagulation is

A
Calcium
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B
Magnesium
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C
Sodium
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D
Iron
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Solution

The correct option is B Calcium
Clotting is platelet aggregation and fibrin formation. Coagulation requires the proteolytic enzyme thrombin. Coagulation requires calcium ions. That is why blood banks uses chelating agents, which bind the calcium in the donated blood, so that the blood will not clot in the bag.
Thus, the correct answer is option (A).

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