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Main role of Haemoglobin? (Hb)
What type of structure is Hb? What does it contain?
The main role of Hb is to carry oxygen (O2) to respiring cells across the body.
Haemoglobin is a quaternary structure that contains 4 polypeptide chains.
What is Affinity for O2?
What does Affinity depend on?
Affinity for O2 is the tendency a molecule has to bind to O2.
Affinity depends on Partial Pressure of Oxygen (pO2).
When does O2 load onto Hb to form Oxyhaemoglobon? (HbO8)
Formula for O2 binding to Hb?
O2 loads to Hb to form HbO8 where there's high pO2.
Hb + O2 《==》HbO8
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