Exocytosis is the process through which cells can eliminate wastes, which might be useless or toxic, to the extracellular space.
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The endocytosis and exocytosis process refers to molecules transport mediated by vesicles.
- Exocytosis occurs from and into the cell and needs energy to happen because it is active transport.
- Exocytosis involves vesicles or vacuoles.
- Vesicles or vacuoles can carry substances destined for exportation or cellular wastes.
- Wastes may be large molecules that result useless for the cells or that might be toxic.
- During the exocytosis process
1) excretion compounds of varying nature accumulate within the
vesicle
2) The vesicle migrates toward the cellular surface.
3) Once in the surface, the vesicle's membrane fuses with the cellular
membrane, and its content is expelled from the cell to the
extracellular space.
4) Vesicle membrane remains fused to the cell membrane until it is
reused during endocytosis events.
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