Respiration involves the movement of gases by the process of

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Respiration involves the transfer of gases between the lungs and blood (external respiration) and between the blood and the tissues (internal respiration). This occurs via the passive process of diffusion, where molecules move from an area of higher concentration to an area of lower concentration. Facilitated transport and active transport are both active processes that require energy and membrane proteins, and are not involved in the passive movement of gases in respiration. Ventilation refers to the mechanical process of moving air in and out of the lungs, but it does not directly involve the movement of gases between the lungs and blood or between the blood and tissues.

Respiration Involves the Movement of Gases by the Process of