Vesicles are small membrane-bound sacs within eukaryotic cells that transport, store, or digest cellular substances. They play a crucial role in processes such as secretion, endocytosis, and intracellular transport.
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Vesicles are formed by the budding off from membranes of organelles like the Golgi apparatus and endoplasmic reticulum.
Types of vesicles include lysosomes, transport vesicles, and secretory vesicles.
Lysosomes contain digestive enzymes that break down waste materials and cellular debris.
Transport vesicles move molecules between locations inside the cell, such as from the endoplasmic reticulum to the Golgi apparatus.
Secretory vesicles release their contents outside the cell via exocytosis.