AP BIOLOGY

Detailed explanation-1: -Ingestion: Amoeba takes in its food through this process. Initially, it pushes out its pseudopodia so that it can encircle the food. After this, it engulfs the food, thus forming a bag-like structure called food vacuole. The process is known as “phagocytosis”.

Detailed explanation-2: -Giant amoebae engulf their prey “by the willful gathering of pseudopods around the bacteria.” In both cases, as the bacteria is drawn in, the cell membrane that surrounds it pinches off to form an intra-cellular compartment called the vacuole.

Detailed explanation-3: -Amoebae are usually capable of producing pseudopodia, which are used as locomotor and food-acquiring organelles. These transitory body extensions depend for their function on the association of actin and myosin.

Detailed explanation-4: -By expanding their pseudopods, amoebas consume their meal. These elongated pseudopods enclose and devour living animals or small objects. It is known as phagocytosis or endocytosis.

Detailed explanation-5: -Pseudopodia are temporary projections of the cytoplasm of a cell. Pseudopodia are used for locomotion and feeding in amoeba and white blood cells. The activation of the polymerization of the actin filaments forces the membrane to extend and form pseudopodia.