MediumNEET 2026
+4 / -1
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.
A
A, B, C, D, E
B
C, A, B, E, D
C
C, B, E, A, D
D
A, C, D, B, E
Explanation
Respiration begins with pulmonary ventilation, followed by diffusion across the alveolar membrane, transport of gases through blood, diffusion between blood and tissues, and finally cellular respiration.
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