Question

Which of the following statements correctly defines the Bohr effect?

• A. Rise in $pC{O}_2$ with a decrease in ${\mathrm{CO}}_2$ conc.
• B. Rise in ${\mathrm{pO}}_2$ with increase in $O_2$.
• C. Fall in $pC{O}_2$ with decrease in pH.
• D. Rise in $pC{O}_2$ with decrease in pH.

Answer 1

The correct option is D Rise in $pC{O}_2$ with decrease in pH.

Rise in $pC{O}_2$ with decrease in pH is related to Bohr effect. Bohr effect is a physiological phenomenon first described in 1904 by the Danish physiologist Christian Bohr. The effect of ${\mathrm{CO}}_2$ and the resultant $H^{+}$ on the oxygen affinity of haemoglobin is called the Bohr effect. This effect states that haemoglobin's oxygen binding affinity is inversely related to both acidity and the concentration of carbon dioxide.