Question

Why do living tissues need to be moist for oxygen to diffuse across them?

Answer 1

The respiratory surface must be keptmoist in order for the gases to dissolve and diffuse across cell membranes. Organisms that live in water need to obtain oxygen from the water. ... When water passes over the gills, the dissolved oxygen in water rapidly diffuses across the gills into the bloodstream.

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Answer 2

The respiratory surface must be kept moist in order for the gases to dissolve and diffuse across cell membranes. Organisms that live in water need to obtain oxygen from the water. ... When water passes over the gills, the dissolved oxygen in water rapidlydiffuses across the gills into the bloodstream.

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