The diagram illustrates the effect that three different carbon dioxide concentrations have on the oxygen dissociation curve for human haemoglobin. X represents partial pressure of carbon dioxide: $3.0\ \text{kPa}$ Y represents partial pressure of carbon dioxide: $5.0\ \text{kPa}$ Z represents partial pressure of carbon dioxide: $7.0\ \text{kPa}$ What effect does an increase in carbon dioxide concentration have on haemoglobin?
- AIt makes haemoglobin less efficient at taking up oxygen and less efficient at releasing oxygen.
- BIt makes haemoglobin less efficient at taking up oxygen and more efficient at releasing oxygen.
- CIt makes haemoglobin more efficient at taking up oxygen and less efficient at releasing oxygen.
- DIt makes haemoglobin more efficient at taking up oxygen and more efficient at releasing oxygen.