Which of the following statements is correct? 1. Bone in human body is inert and unchanging. 2. Mg plays roles in neuromuscular function and interneuronal transmission. 3. Daily requirement of Mg and Ca is about 0.2–0.3 g. 4. All ATP-utilising enzymes require Ca as cofactor.

Options

1. 1
2. 2
3. 3
4. 4

Correct Answer

Mg plays roles in neuromuscular function and interneuronal transmission.

Explanation

Magnesium is crucial for enzyme activity and transmission of nerve impulses. Bones are dynamic, and ATP-utilising enzymes generally use Mg²⁺, not Ca²⁺.

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