These are three different ways that cells have to get things in and out of the cell. Passive transport is movement without the use of energy, active transport requires energy.
Active transport requires energy since the molecules are going toward a region that has a higher concentration of that molecule. The cell is 'stuffing' more into itself.
Endocytosis means to 'take into the cell'. Usually this a larger molecule and cell must wrap part of itself around the molecule and then can bring it inside. This is a type of phagocytosis (cell eating).
This requires energy as well.
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It is the active transport of liquids in vesicles into and out of a cell so it uses metabolic energy, thus active
active
Via endocytosis, active transport and facilitated passive transport and diffusion.
Endocytosis and exocytosis
The process by which substances enter and exit the cell is called cellular transport. It primarily occurs through two main mechanisms: passive transport, which does not require energy, and active transport, which requires energy expenditure by the cell. Examples of passive transport include diffusion and osmosis, while examples of active transport include endocytosis and exocytosis.