GyanGramQuestion
Consider the following minerals -
1. Calcium
2. Iron
3. Sodium
Which of the minerals given above is/are required by the human body for the contraction of muscles?
PRELIMS 2013 · SCIENCE & TECHNOLOGY
Consider the following minerals - 1. Calcium 2. Iron 3. Sodium Which of the minerals give…
Attempt this previous-year question. The correct option stays hidden until you choose.
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• Correct Answer: D
• Calcium triggers muscle fibre interaction via troponin; iron enables myoglobin/oxygen transport for ATP synthesis; sodium generates action potentials.
• All three are essential: calcium for contraction mechanics, iron for aerobic energy, sodium for nerve signalling.
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