The plot shows an oxygen-binding curve for human hemoglobin. For each condition, indicate whether the stated physiological change would shift the curve to the left, produce no change, or shift the curve to the right.
Added by Mitchell B.
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The position of the curve can shift left or right based on various physiological factors. A leftward shift indicates increased oxygen affinity, meaning hemoglobin binds oxygen more readily at lower pO2. A rightward shift indicates decreased oxygen affinity, Show more…
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The graph represents the adult hemoglobin binding curve (in green) at pH 7.4 in the presence of 2,3-bisphosphoglycerate. The hemoglobin binding curve has a sigmoidal shape, due to four interacting oxygen-bound sites. For comparison, the myoglobin binding curve has only one oxygen-bound site and has a hyperbolic curve. For each of the six scenarios, determine whether the hemoglobin binding curve would shift left or shift right. Myoglobin Hemoglobin pO2 (torr) Shifts left Shifts right
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