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NEET Biology question

BiologyBreathing and Exchange of GasesNEET

Given below is a list of different steps (i-vi) involved in respiration (i) Utilisation of O by the cells for catabolic reactions (ii) Transport of gases by the blood (iii) Pulmonary ventilation by which atmospheric air is drawn in and CO is released out (iv) Release of resultant CO (v) Diffusion of O and CO between blood and tissues (vi) Diffusion of gases (O and CO) across alveolar tissues Select an option which has the correct sequence of all the steps

Answer: (A)

Solution

Respiration proceeds as pulmonary ventilation bringing air to the alveoli (iii), diffusion of gases across the alveolar membrane (vi), transport of the gases by blood (ii), diffusion of O/CO between blood and tissues (v), utilisation of O by the cells (i), and finally release of the resultant CO (iv)

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Question ID VK-119270