The only immediate source of energy for muscular contraction is

Phosphocreatinine

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ATP

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Glucose

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Phosphoarginine

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Solution

The correct option is B
ATP

ATP is the only immediate source of energy for muscular contraction. ATP is replenished within muscle fibres from creatine phosphate (anaerobic respiration), by glycolysis (anaerobic respiration) and by cellular respiration (aerobic respiration).

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