Video - Endocytosis and exocytosis
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Video Summary
Endocytosis is the process of taking in material by enclosing it in a vesicle. Exocytosis is the opposite process, where the vesicle fuses with the plasma membrane and expels its contents to the outside of the cell. Endocytosis and exocytosis work together to allow cells to take in nutrients from their environment and to excrete waste products.