Haemoglobin (oxygen dissociation curve, Bohr effect, adaptations) | A Level Biology

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Tailored to the AQA specification, covering all spec points:
The haemoglobins are a group of chemically similar molecules found in many different organisms
Haemoglobin is a protein with a quaternary structure
The role of haemoglobin and red blood cells in the transport of oxygen
The loading, transport and unloading of oxygen in relation to the oxyhaemoglobin dissociation curve
The cooperative nature of oxygen binding to show that the change
in shape of haemoglobin caused by binding of the first
oxygens makes the binding of further oxygens easier
The effects of carbon dioxide concentration on the dissociation of
oxyhaemoglobin (the Bohr effect)
Many animals are adapted to their environment by possessing different types of haemoglobin with different oxygen transport properties

Also relevant for OCR, Edexcel, CAIE, etc.