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In Passive Transport processes, is cellular energy required from a low to high concentration?

April 26, 2017cellular energy Engineering Mathematics passive Processes transport

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In Passive Transport processes, is cellular energy required from a low to high concentration?

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By definition passive transport does not require energy and therefore always moves substances down the concentration gradients. Therefore, it is always from a region of high concentration to low concentration. If the process requires energy it would be active transport.