Oxygen and carbon dioxide are exchanged in tissues by the process of:
A)diffusion
B)facilitated diffusion
C)osmosis
D)filtration

Question

Quizplus · Accepted Answer

Oxygen and carbon dioxide move from areas of high concentration to areas of low concentration through the process of diffusion, allowing them to be exchanged in tissues. Facilitated diffusion uses specialized protein channels to assist the transport of molecules, but is not necessary for the exchange of oxygen and carbon dioxide. Osmosis refers specifically to the movement of water molecules across a membrane, while filtration involves the movement of molecules based on pressure gradients.

Oxygen and Carbon Dioxide Are Exchanged in Tissues by the Process