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(A) Haemoglobin contains an iron-based pigment called haem,which has a high affinity for oxygen,allowing it to easily bind and transport oxygen in the

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Less oxygen

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(A) Haemoglobin contains an iron-based pigment called haem,which has a high affinity for oxygen,allowing it to easily bind and transport oxygen in the blood.In contrast,haemocyanin is a copper-containing respiratory pigment.Copper-based pigments generally have a lower affinity for oxygen compared to iron-based haemoglobin.Therefore,if haemoglobin is replaced by haemocyanin,the oxygen-carrying capacity of the blood would decrease,meaning it will carry less oxygen.

If haemoglobin is replaced by haemocyanin,the blood will carry

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