i. Myoglobin and haemoglobin [2]
Answer:
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Myoglobin
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Haemoglobin
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In Muscle
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In red blood cells
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Stores oxygen
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Transport oxygen
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Higher affinity to oxygen
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Lower affinity to oxygen
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One sub-unit
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Four sub-units
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One oxygen molecule/haem
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Four oxygen molecules /haem
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Cannot carry CO2
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Can carry CO2
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