The exchange of gases across a respiratory surface always occurs by
A)diffusion.
B)facilitated transport.
C)bulk flow.
D)active transport.

Name: The exchange of gases across a respiratory surface always occurs by A)diffusion. B)facilitated transport. C)bulk flow. D)active transport.
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Question

Quizplus · Accepted Answer

Gas exchange across a respiratory surface occurs by diffusion, which is the passive movement of gases from an area of higher concentration to an area of lower concentration.

The Exchange of Gases Across a Respiratory Surface Always Occurs