Haemoglobin

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• para pure of get/kP
• A Figure 2 The effect of carbon doside concentration an the argen dissociation curve
• Loading, Transporting and Unloading Oxygen


  1. The lungs, CO2 is constantly being removed from the blood, creating a low CO2 concentration surrounding the haemoglobin

  2. The low 002 means the pH of the blood is higher (more alkaline)-this changes the stepe of the haemoglobin soit fuas a higher affinity for 02 and therefore loads/binds to 02 more sly

  3. Inspiring CO2 is constantly being produced and released into the blood, creating high CO2 concentration surrounding the haemoglobin

  4. The high CO2 means the pH of the blood is lower (more acidic) this changes the shape of the hamoglobin so it has a lower affinity for 02 and therefore unloads/releases its 02 marely
• The higher the rate of respiration


  The more carbon dioxide the tissues produce the lower the pH
• The greater the shape change

  The more readily oxygen is unloaded the more oxygen is available for respiration
• Haemoglobin


  Different species have different types of haemoglobin with slightly different amino acid sequences, resulting in different structures and oxygen affinities
• Organisms evolved in very low oxygen environments


  • Their haemoglobin binds to oxygen more tightly, meaning less oxygen is unloaded (the saturation curve is shifted to the left)