When plasma CO₂ increases,then
A)pH decreases.
B)HCO₃- decreases.
C)CO increases.
D)H⁺ decreases.

Question

Quizplus · Accepted Answer

When plasma CO₂ increases, it combines with water to form carbonic acid, which then dissociates into bicarbonate ions and hydrogen ions. This reaction lowers the pH of the plasma, meaning that the concentration of hydrogen ions in the plasma increases. Therefore, option A is the best choice as it correctly explains the change in pH due to an increase in plasma CO₂. Options B and C are incorrect, as an increase in plasma CO₂ actually results in an increase in bicarbonate ions and carbon monoxide, respectively. Option D is also incorrect, as an increase in plasma CO₂ would lead to an increase, not a decrease, in the concentration of hydrogen ions.

When Plasma CO₂ Increases,then