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12 Cards in this Set
- Front
- Back
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What do red blood cells contain? |
Haemoglobin (Hb) |
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What is haemoglobin? What is it made up of? |
A large protein with a quaternary structure.Its made up of 4 polypeptide chains. |
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What does each polypeptide chain contain? |
A haem group which contains iron. |
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Haemoglobin has a high affinity for what? |
Oxygen |
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How many oxygen molecules can each haem group carry? |
4 |
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Oxygen + haemoglobin make what? |
oxyhaemoglobin |
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What is dissociation? |
This is when oxygen is taken away from oxyheamoglobin leaving haemoglobin alone. |
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What does haemoglobin saturation depend on? |
Partial pressure of oxygen |
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What is partial pressure of oxygen? |
The measure of concentration of oxygen. |
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What is the trend between the concentration of dissolved oxygen in cells and partial pressure? |
The higher the concentration of dissolved oxygen in cells,the higher the partial pressure. |
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What does 100% saturation mean? |
This means every haemoglobin molecule is carrying the maximum of 4 molecules of oxygen. |
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What does 0% saturation mean? |
This means none of the haemoglobin molecules are carrying any oxygen. |
