Why are endocytosis and exocytosis important processes to cells?

Endocytosis enables the cell to take in the bacteriaor fluid droplets from out side the cell and this is important for defense and nutrition respectively. Exocytosis is important for the cell to secrete products like hormones or enzymes to the outside so other body parts can make use of them like insulin and digestive enzymes from the pancreas.

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answerblank(1); ecological; blank(2); evolutionary;