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Question
What is the source of energy for muscle contraction?
Solution
The source of energy for muscle contraction is ATP (Adenine Triphosphate). An enzyme called myosin ATPase present on the head of the myosin molecule breaks down into ADP and inorganic phosphate in the presence of magnesium and calcium ions and releases energy in the head of the myosin.
i.e., ATP → ADP + Pi + Energy
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