Given the Properties of Myoglobin Shown in the O₂ saturation

question 114

Multiple Choice

Given the properties of myoglobin shown in the O₂ saturation curve below, what advantage does myoglobin confer to contracting muscles?

• A)It pumps oxygen from hemoglobin in order to bind oxygen.
• B)It contributes to the dark color of flight muscle in birds.
• C)It increases the effectiveness of glycolytic muscles used in short bursts.
• D)It releases bound oxygen at lower pO₂ conditions than hemoglobin does.
• E)It binds oxygen at pO₂ values at which hemoglobin is releasing its bound O₂, facilitating O₂ delivery to muscle mitochondria.

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