ZOO · BIO-2026-C11-138Zoology
In humans, respiration occurs in the following steps. Arrange these steps in the correct order. A. Diffusion of O2 and CO2 between blood and tissues. B. Diffusion of O2 and CO2 across alveolar membrane. C. Pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out. D. Cellular respiration. E. Transport of gases by the blood. Choose the correct answer from the options given below