An astronaut on a prolonged space mission experiences increased 2,3-BPG levels in their red blood cells. Which effect becomes more likely due to this physiological adaptation?

💡 Explanation

Elevated 2,3-BPG decreases hemoglobin's oxygen affinity due to allosteric binding, promoting oxygen unloading in tissues. Because of this induced conformational change, more oxygen is released. Therefore, enhanced oxygen delivery is the correct answer, rather than increased affinity; the other options are unrelated to the direct effects of 2,3-BPG.

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