Type of process | Example |
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Endocytosis | |
Receptor-mediated endocytosis | Specific uptake of large molecules (e.g., LDL) |
Pinocytosis | Nonspecific uptake of extracellular fluid (e.g., fluids and dissolved substances from blood) |
Phagocytosis | Nonspecific uptake of large undissolved particles (e.g., invading bacteria by cells of the immune system) |
Exocytosis | |
Release of large molecules | Vesicle fusion with cell membrane (e.g., digestive enzymes in the pancreas) |
Release of small molecules | Vesicle fusion with cell membrane (e.g., neurotransmitters at the synapse) |