When active tissues have high carbon dioxide concentrations, oxyhaemoglobin releases oxygen to these tissues.
What encourages this release in the presence of high concentrations of carbon dioxide?
1) carboxyhaemoglobin forms more readily
2) oxyhaemoglobin dissociates more readily
3) haemoglobin needs higher concentrations of oxygen to become saturated
1 )
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
2 and 3 only
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