In which movement, transport molecules are ne | vedclass

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(B) In $Facilitated 	ext{ } diffusion$, specific membrane proteins are required to facilitate the movement of molecules across the membrane. However,

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Facilitated diffusion

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(B) In $Facilitated 	ext{ } diffusion$, specific membrane proteins are required to facilitate the movement of molecules across the membrane. However, this process occurs along the concentration gradient, meaning molecules move from a region of higher concentration to a region of lower concentration. Since it follows the concentration gradient, $Facilitated 	ext{ } diffusion$ does not require the expenditure of metabolic energy $(ATP)$. In contrast, $Active 	ext{ } transport$ requires both transport proteins and energy $(ATP)$, while simple $Diffusion$ does not require transport proteins.

In which movement, transport molecules are necessary but energy is not utilized?

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