Question

substances in red blood cells that combines with oxygen is called

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Answer 1

The Correct solution is Haemoglobin.

• Hemoglobin is a pigment found in red blood cells that binds four oxygen molecules per molecule, resulting in Oxyhaemoglobin.
• The oxygen molecules are delivered to and released by particular cells in the body tissue.
• The reaction of oxygen binding is reversible.
• A second and third oxygen molecule are easier to bind to Hb than the first.
• This is due to the fact that as the oxygen attaches to haemoglobin, its  conformation, changes.
• The oxygen binding to haemoglobin can be depicted as a function of blood oxygen partial pressure (x-axis) vs relative Hb-oxygen saturation (y-axis) (y-axis).
• The oxygen dissociation curve that results is sigmoidal. The haemoglobin becomes increasingly saturated with oxygen as the partial pressure of oxygen rises.
• Diseases like Sickle cell anaemia and thalassemia cause the blood's ability to supply oxygen to tissues and its oxygen-carrying capacity to be reduced.