EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient because.
A
The compound carboxy-haemoglobin (COHb) it forms with haemoglobin can gradually clot the blood resulting in circulatory failure
B
COHb reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes
C
COHb is stable compound and thus deprives blood of its ability to transport oxygen
D
COHb greatly modifies the structure of haemoglobin thus making it lose its affinity for oxygen
Explanation: 

Detailed explanation-1: -Carboxyhemoglobin reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes. No worries!

Detailed explanation-2: -Carbon monoxide symptoms mimic the flu: headaches, fatigue, nausea, dizziness, confusion, and irritability. Continued exposure can lead to vomiting, loss of consciousness, brain damage, heart irregularity, breathing difficulties, muscle weakness, abortions and even death.

Detailed explanation-3: -Carbon monoxide is harmful when breathed because it displaces oxygen in the blood and deprives the heart, brain and other vital organs of oxygen. Large amounts of CO can overcome you in minutes without warning-causing you to lose consciousness and suffocate.

Detailed explanation-4: -Carbon monoxide poisoning occurs as carbon monoxide mixes and binds with hemoglobin in the blood to form carboxyhemoglobin (COHb). When carbon monoxide binds to hemoglobin, less oxygen gets transported to body tissues and vital organs such as the brain and heart.

Detailed explanation-5: -Carbon monoxide, which is one of the ETS constituents, in addition to its reprotoxic effects, binds directly to hemoglobin, forming carboxyhemoglobin and thus decreasing the oxygen-carrying capacity of the blood, which in turn can result in adverse health effects on the cardiovascular system.

There is 1 question to complete.