BRAINCAKEOxygen Dissociation Curve
The oxygen dissociation curve shows the relationship between the partial pressure of oxygen in the environment and the percentage saturation of haemoglobin with oxygen.
At low oxygen concentrations, little oxygen is bound to haemoglobin because the subunits are closely bound and in close proximity making it difficult for the first oxygen molecule to bind.
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Key terms in this lesson
- haemoglobin
- A globular, quaternary protein in red blood cells, made of four polypeptide chains each with a haem group, that binds and transports oxygen.
More in Mass Transport in Animals
- Haemoglobin
- Loading and Unloading Oxygen
- Different Types of Haemoglobin
- Effect of Carbon Dioxide
- Transport of Oxygen
- Lugworm
- Llama
- Fetal Haemoglobin
All 27 lessons in Mass Transport in Animals · All AQA AS-level Biology topics