1. What is endocytosis? State its significance.
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Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested material. Endocytosis includes pinocytosis and phagocytosis
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Endocytosis enables uptake of nutrients and helps to control the composition of the plasma membrane. The process is important for the regulation of major cellular functions such as antigen presentation or intracellular signaling cascades.
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