Most of the oxygen carried in the blood is transported
- A. dissolved in the plasma
- B. as bicarbonate ions
- C. as carboxyhaemoglobin
- D. bound to haemoglobin inside red blood cells
Explanation
About 97 per cent of oxygen rides on haemoglobin as oxyhaemoglobin, while only a small fraction dissolves in plasma. Bicarbonate carries carbon dioxide, not oxygen, and carboxyhaemoglobin is the poisonous CO complex.
Related questions
During swallowing, entry of food into the trachea is prevented by the
The rings of cartilage in the wall of the trachea are C shaped rather than complete because
During inspiration the diaphragm
Quiet expiration at rest is described as a passive process because
The volume of air moved in or out of the lungs during one normal quiet breath is called the