Partial pressure of CO2 is high at the tissue site because of
Anabolism
Catabolism
Both Catabolism and Anabolism
None of these
The partial pressure of CO2 in the tissues is higher than that in the blood because of the production of CO2 by the cells. The higher partial pressure of CO2 in the tissues is due to the breakdown of glucose and other nutrients through cellular respiration, which produces CO2 as a waste product. This causes CO2 to diffuse from the tissues into the blood, where it can be transported to the lungs for exhalation.
Option b is the correct answer.