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merrit lim
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why simple diffusion does not require a semi-permeable membrane?
merrit lim said:why simple diffusion does not require a semi-permeable membrane?
Simple diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration. This process does not require a semi-permeable membrane because the molecules are able to freely move across the membrane without any assistance or regulation.
Simple diffusion occurs due to the natural kinetic energy of molecules. As molecules are in constant motion, they will eventually collide and spread out evenly in a given space. This results in the movement of molecules from an area of high concentration to an area of low concentration, without the need for a semi-permeable membrane.
Simple diffusion can occur with any small, non-polar molecules, such as oxygen, carbon dioxide, and lipids. These molecules are able to easily pass through the spaces between the lipid molecules that make up the cell membrane.
Yes, simple diffusion can occur in both directions without a semi-permeable membrane. As long as there is a difference in concentration between two areas, molecules will continue to move in both directions until equilibrium is reached.
Simple diffusion does not require a semi-permeable membrane under normal circumstances. However, in certain situations where the concentration gradient is too steep or the molecules are too large to pass through the membrane, a semi-permeable membrane may be necessary to regulate and facilitate the diffusion process. This is seen in specialized cells, such as kidney cells, where a semi-permeable membrane helps control the reabsorption of water and nutrients.