Distinguish between intracellular and extracellular digestion.

Intracellular digestion occurs within the cell where food particles are engulfed into vacuoles and broken down by lysosomal enzymes, typical in unicellular organisms like amoeba; whereas extracellular digestion occurs outside the cells within a body cavity where digestive enzymes break down food and the nutrients are then absorbed by cells, a process seen in most multicellular animals including humans.