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Question
Exchange of gases between blood and alveolar air in lungs occurs by
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Solution
Exchange of gases
The gaseous exchange (the exchange of CO2 and O2) takes place between the blood capillaries and the alveoli (a sac-like structure of lungs helps in the gas exchange).
This exchange of gases is done via a simple transport mechanism in which the spontaneous flow of gases occurs across the respiratory membrane without the expenditure of energy.
Final answer
(2) simple transport
The gaseous exchange (the exchange of CO2 and O2) takes place between the blood capillaries and the alveoli (a sac-like structure of lungs helps in the gas exchange).
This exchange of gases is done via a simple transport mechanism in which the spontaneous flow of gases occurs across the respiratory membrane without the expenditure of energy.
Final answer
(2) simple transport
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