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Describe heterophagic intracellular digestion

Describe heterophagic intracellular digestion? How is this procedure accomplished?

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Heterophagic intracellular digestion is the breaking of smaller substances of external substances engulfed in the cell by phagocytosis or pinocytosis.

Pinosomes or Phagosomes fuse with lysosomes forming the digestive vacuoles. In the digestive vacuoles the molecules to be hydrolyzed or digested the products of the digestion cross via the membrane and reach the cytoplasm or they are kept within the vacuoles. The vacuole with residues from digestion is termed as residual body and by exocytosis it fuses with the plasma membrane and discharges its “waste” in the external space.

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