Cellular transport is the mechanism that moves the molecules and ions across the membranes. Simple diffusion, facilitated diffusion, and osmosis is involved in the gas exchange.
What are diffusion and osmosis?
Osmosis is a type of transportation that involves the movement of the solvent from the high water to the low water concentration region. This movement equates to the solute concentration.
The diffusion can be simple or facilitated. In simple diffusion, the small solutes move across the membranes through the concentration gradient. While in facilitated diffusion, the large and charged molecules move along the gradient.
Therefore, osmosis, simple diffusion, and facilitated diffusion are transport mechanisms.
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