The movement of molecules from an area of higher concentration to an area of lower concentration without the participation of specific carrier molecules is called

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Passive diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration without the participation of specific carrier molecules. Facilitated diffusion requires the assistance of specific carrier molecules. Osmosis specifically refers to the movement of water molecules across a selectively permeable membrane. Active transport requires the use of energy to move molecules against their concentration gradient.

The Movement of Molecules from an Area of Higher Concentration