Q. What is Bohr’s effect?
A) Raise of $pCO_{2}$ or fall in pH decreases the oxygen affinity of haemoglobin
B) Decrease of $pCO_{2}$ or fall in pH decreases the oxygen affinity of haemoglobin
C) Raise of $pCO_{2}$ or increase in pH decreases the oxygen affinity of haemoglobin
D) Shifting of the oxygen-haemoglobin curve to left
Explanation
Bohr’s effect A rise in $\rho CO_{2}$ or fall in pH decreases the oxygen affinity of haemoglobin, raising the $P_{50}$ value and shifts the curve to the right. This is called Bohr’s effect. Conversely, a fall in $\rho CO_{2}$ and rise in the pH increases oxygen affinity of haemoglobin. ($P_{50}$ value is the value of $\rho O_{2}$ at which haemoglobin is 50% saturated with oxygen to form haemoglobin
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.