Passive transport plays a crucial role in oxygen's journey through our body. Oxygen is a small molecule that can passively diffuse across cell membranes, allowing it to move from areas of higher concentration to areas of lower concentration without the need for energy input. This passive diffusion of oxygen helps it move from the lungs into the bloodstream, and then into the cells where it is needed for cellular respiration. By utilizing passive transport, oxygen can efficiently and effectively navigate through our body and reach the tissues and organs that require it to function properly.
