Endocytosis is a process by which amoeba engulfs its food. Amoeba has a flexible membrane and finger-like projections called pseudopodia. Pseudopodia forms a vacuole around it and helps in engulfing the food. When the food particle is completely trapped inside its vacuole amoeba secretes its digestive enzymes and digests the food. The digestive enzymes are secreted into the food vacuole in amoeba to break down the food. The enzymes act on food particles in the food vacuole and breakdown into simpler molecules by chemical reaction which are soluble in its body. The mode of nutrition in amoeba is referred to as a holozoic mode of nutrition.