Question

Dissociation curve shifts to the right when ______________.

• A. $O_2$ concentration decreases
• B. $C{O}_2$ concentration decreases
• C. $C{O}_2$ concentration increases
• D. Chloride concentration increases

Answer 1

The correct option is C $C{O}_2$ concentration increases

The oxygen–hemoglobin dissociation curve, also called the oxyhemoglobin dissociation curve or oxygen dissociation curve (ODC), is a curve that plots the proportion of hemoglobin in its saturated (oxygen-laden) form on the vertical axis against the prevailing oxygen tension on the horizontal axis.

The shift of the oxygen dissociation curve to the right occurs in response to an increase in the partial pressure of carbon dioxide ($pC{O}_2$), a decrease in pH, or both.

So, the correct option is C.