Question

Which of the following equations is correct?

• A. $KHbO _{2}+ H ^{+} \underset{ RBC }{\rightleftharpoons} Hb + K + H _{2} O$
• B. $Hb + O _{2} \underset{\text { Dissociation in lungs }}{\stackrel{\text { Association in tissues }}{\rightleftharpoons}} HbO _{2}$
• C. $Na ^{+}+ HCO _{3}^{-} \rightleftharpoons NaHCO _{3}$
• D. $HbO _{2} \underset{\text { Association in lungs }}{\stackrel{\text { Dissociation in tissues }}{\rightleftharpoons}} Hb + O _{2}$

Answer 1

Answer: (D)

Option (d) with equation is correct as Oxyhaemoglobin $\left( HbO _{2}\right)$ dissociates in the tissue to provide oxygen in the tissues. And $HbO _{2}$ formation or association occurs in lungs (alveoli) when oxygen is inspired through breathing.