Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by ________.
A) osmosis
B) simple diffusion
C) facilitated diffusion
D) active transport
E) endocytosis

Question

Quizplus · Accepted Answer

Both oxygen and carbon dioxide are small, nonpolar molecules that can passively diffuse across the respiratory membrane through simple diffusion. Osmosis refers to the movement of water, facilitated diffusion requires a membrane protein, active transport requires energy, and endocytosis involves engulfing particles into a cell.

Exchange of Both Oxygen and Carbon Dioxide Through the Respiratory