Respuesta :

Passive transport doesn't require energy (ATP), active transport does require energy.Passive transport moves molecules WITH the concentration gradient (high to low), while active transport moves molecules AGAINST the concentration gradient (Low to High).

Passive and active transport are similar because they move substances in and out of the cell.Passive and active transport are different because passive transport moves substances from an area of high concentration to a area of low concentration and requires no energy to be used by the cell while active transport moves substances from an area of low concentration to an area of high concentration and requires the cell to use energy.

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