Which motion of particles across a membrane requires energy? O from high concentration to low concentration from low concentration to high concentration with no concentration gradient O through dynamic equilibrium
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The motion of particles across a membrane that requires energy is from low concentration to high concentration. This type of movement is against the concentration gradient, meaning that particles move to an area where they are more concentrated, which is a process called active transport. Active transport requires the cell to expend energy, typically in the form of adenosine triphosphate (ATP), to move these particles across the membrane because it is an uphill process, going against the natural tendency of substances to move from areas of high concentration to areas of low concentration.