Vesicles and Vacuoles are membrane-bound sacs with varied functions. They look as they were described, like big sacs of empty space, but they do much more. There are 3 types: food vacuoles, contractile vacuoles, and central vacuoles. A food vacuole is from phagocytosis, and fuse with lysosomes. A contractile vacuole is found in freshwater protists, and they pump excess water out of the cell. The central vacuole, the most common vacuole, is found in many mature plant cells, right outside of the endoplasmic reticulum. Its functions include stockpiling proteins or inorganic ions, depositing metabolic byproducts, storing pigments, and storing defensive compounds against herbivores. These vacuoles are made of fused membrane vesicles that are filled with water that contains organ and inorganic molecules. Vesicles are very small vacuoles that are formed in the Golgi and can carry proteins to other places in the cell.
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