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Haemoglobin
What is it?

Haemoglobin is a protein with several important properties:

it occurs in red blood cells, where it has a vital role in oxygen transport
it is a protein with a quaternary structure because it is made from four polypeptide
chains
it has the remarkable ability to pick…

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different Haemoglobins have different affinities for oxygen. High affinity means it takes up
oxygen easily but releases it less readily, low affinity means it takes up oxygen less easily
but releases it readily.

An organism living in an enviroment with little oxygen requires a haemoglobin that readily
combines with oxygen…

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