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Passive and Active Transport

Passive and Active Transport

Author: John Lui
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Tutorial

Active and Passive Transport Video

Source: Brandon Burns

What the differences and similarities?

Differences
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).
Similarities
They both allow the cell to maintain homeostasis by maintaining an equilibrium of subtances in and out of the cell.
They both involve moving material across or through the plasma membrane.