Myoglobin in muscle releases its oxygen only when partial pressure of oxygen becomes very low. What does this show?
Correct answer A. Myoglobin has a higher affinity for oxygen than haemoglobin
Explanation
Myoglobin's dissociation curve lies far to the left of haemoglobin's. It stores oxygen in muscle and releases it only during intense exercise when tissue pO₂ is very low.
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