Gas Exchange Quiz

The surface might be the air/water interface of a water body, the surface of a gas bubble in a liquid, a gas-permeable membrane, or a biological membrane that forms the boundary between an organism and its extracellular environment.

Gas exchange is the physical process by which gases move passively by diffusion across a surface.

In small unicellular organisms, the gas exchange membrane is typically the cell membrane due to their high surface-area to volume ratio.

<p>Specialised structures with convoluted surfaces such as gills, pulmonary alveoli, and spongy mesophylls provide the large area needed for effective gas exchange.</p> Signup and view all the answers

<p>Some small multicellular organisms, such as flatworms, are able to perform sufficient gas exchange across the skin or cuticle that surrounds their bodies.</p> Signup and view all the answers