The movement of substances from higher to lower concentration across a semi permeable membrane that must have a specific protein carrier but no energy expenditure is called

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Facilitated diffusion involves the movement of substances from higher to lower concentration with the help of a specific protein carrier. Unlike active transport, which requires energy expenditure, facilitated diffusion is a passive process. Osmosis involves the movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Endocytosis involves the process by which cells take in materials from the outside environment by engulfing them in a vesicle.

The Movement of Substances from Higher to Lower Concentration Across