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Question

How does carbon dioxide bind to hemoglobin?


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Solution

Hemoglobin:

  1. Hemoglobin is composed of the words 'haem' and 'globin.'
  2. Globin is the protein component of hemoglobin, and haem is the non-protein component.
  3. Globin is present in greater quantities in hemoglobin than haem.
  4. Hemoglobin is required for the transport of oxygen throughout the body.
  5. Hemoglobin is found in red blood cells and is the primary respiratory protein in humans.

Carbaminohaemoglobin:

  1. Carbon dioxide is transported by hemoglobin in three different ways.
  2. Because of the higher solubility of carbon dioxide in the blood, it transports it more easily than oxygen.
  3. Carbon dioxide can be transported in three ways.
  4. It is only a trace amount that is transported in the dissolved state in plasma.
  5. Carbon dioxide reacts with the amine group of hemoglobin, forming carbaminohaemoglobin.
  6. Plasma transports a significant amount of carbon dioxide as bicarbonates.
  7. Carbonic acid is formed when carbon dioxide produced by tissues diffuses into red blood cells and reacts with water.
  8. After that, the carbonic acid dissociates into hydrogen and bicarbonate ions.
  9. The majority of bicarbonate ions produced by RBCs diffuse into the plasma along a concentration gradient.
  10. When deoxygenated blood reaches the lung's alveoli, carbaminohaemoglobin and sodium bicarbonate dissociate because the partial pressure of carbon dioxide in the alveoli is low compared to that of oxygen.
What is mostly present in our blood carbaminohemoglobin class 11 biology  CBSE

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