BRAINCAKEHaemoglobin
Haemoglobin is a protein that binds oxygen when there is lots of oxygen available and releases oxygen when there is a low partial pressure of oxygen.
Many different organisms have different haemoglobins which differ in structure and their affinity for oxygen.
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Key terms in this lesson
- quaternary structure
- The structure formed when two or more polypeptide chains, and sometimes a non-protein prosthetic group, are held together to form a functional protein.
- disulfide bridge
- A strong covalent bond formed between two sulfhydryl (-SH) groups of cysteine residues in a polypeptide.
More in Mass Transport in Animals
- Loading and Unloading Oxygen
- Different Types of Haemoglobin
- Oxygen Dissociation Curve
- 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