question_answer

Exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient because:        

A) The compound carboxy-haemoglobin is formed with haemoglobin which can gradually clot the blood resulting in circulatory failure.

B) carboxy-haemoglobin reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes.

C) carboxy-haemoglobin greatly modifies the structure of haemoglobin, thus making it lose its affinity for oxygen.

D) The compound formed, carboxy-haemoglobin does not allow RBCs to act for their respiratory function.