Endocytosis+and+Exocytosis

Endocytosis:

Process in which molecules are too big to pass through the cell membrane Mainly single-celled eukaryotes use endocytosis to ingest food particles This process occurs by the plasma membrane extending out towards the food particles and surrounding it; taking it into the cell

Three types of endocytosis: __ Phagocytosis: __ material taken in by the cell is a bacterium or fragment of organic matter __ Pinocytosis: __ material taken in by the cell is a liquid __ Receptor-meditated endocytosis: __ specific molecules are taken in by the cell

Figure 1: Endocytosis types ([])

Exocytosis:

Opposite of endocytosis Materials within the cell move to the cells surface and are then released into the external environment

Figure 2: Exocytosis Diagram ([])

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