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What is the similarity between simple diffusion and facilitated diffusion?

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The similarities between facilitated diffusion and simple diffusion are: They both involve the movement of a substance across a cell membrane along its concentration gradient (from an area of high concentration to an area of low concentration). read more

Simple diffusion is the movement of molecules across the cell membrane from an area of high concentration to an area of low concentration. These molecules have the right size and composition to squeeze through the components of the cell membrane. read more

The differences are simple diffusion just goes though the membrane of a cell while facilitated diffusion uses a protein channel. Simple diffusion: it is the process where molecules move from a area of high concentration to an are of lower concentration. There is no energy needed in simple diffusion. read more

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