Question
Biology Question on Exchange Of Gases
When CO2 concentration in blood increases, breathing becomes
A
There is no effect on breathing
B
Slow and deep
C
Faster and deeper
D
Shallower and slow
Answer
Faster and deeper
Explanation
Solution
When the concentration of carbon dioxide (CO2) in the blood increases, it leads to a faster and deeper breathing pattern. This response occurs because the higher CO2 concentration reduces the affinity of hemoglobin (Hb) for oxygen (O2). As a result, CO2 is released more readily in the body's tissues, which in turn speeds up the delivery of oxygen (known as the Bohr effect). This heightened oxygen delivery triggers an increase in the rate and depth of breathing.