In humans, which among these is not a step in respiration
Options
(a) Pulmonary ventilation
(b) Alveolar diffusion of O₂ and CO₂
(c) Diffusion of O₂ and CO₂ between blood and tissues
(d) Utilization of CO₂ by cells for catabolic reactions
Correct Answer:
Utilization of CO₂ by cells for catabolic reactions
Explanation:
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