Why must the respiratory surface of animals a | vedclass

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Question

(D) $1$. The respiratory surface must be moist because gases like $O_2$ and $CO_2$ can only cross the cell membrane when they are dissolved in water.$

Vedclass · Accepted Answer

To facilitate the diffusion of respiratory gases.

Vedclass · Answer

(D) $1$. The respiratory surface must be moist because gases like $O_2$ and $CO_2$ can only cross the cell membrane when they are dissolved in water.$2$. A moist surface allows these gases to dissolve, which facilitates their efficient diffusion across the respiratory membrane.$3$. Therefore, the respiratory surface is covered with moist epithelial cells to ensure continuous gas exchange.

Why must the respiratory surface of animals always be moist?

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