28 What explains how the uptake of oxygen is maximised as blood passes through the capillaries of the lungs?
A Each haemoglobin molecule can temporarily bind to four oxygen atoms.
B Oxyhaemoglobin formation increases the capacity of red blood cells to transport oxygen.
C The binding of the first oxygen molecule to haemoglobin decreases the molecule’s affinity for binding other oxygen molecules.
D The dissociation of carbon dioxide from carboxyhaemoglobin allows more haemoglobin to be available for oxygen binding.
Please explain ASAP why B is the correct answer... EXAM'S TOMORROW!!!!
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Urgent help needed please: My biology as level paper 1 retake exam's tomorrow!!!! watch
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Last edited by Mohammad Shoumik; 12-11-2015 at 12:39.
- 12-11-2015 06:29