IMMUNOLOGY

Detailed explanation-1: -Phagocytosis consists in recognition and ingestion of particles larger than 0.5 m into a plasma membrane derived vesicle, known as phagosome. Phagocytes can ingest microbial pathogens, but importantly also apoptotic cells.

Detailed explanation-2: -The process by which a phagocyte (a type of white blood cell) surrounds and destroys foreign substances (such as bacteria) and removes dead cells.

Detailed explanation-3: -Endocytosis, the process by which large molecules are internalised into the cell, occurs when foreign material is engulfed within the cell membrane, which then forms a vesicle containing the ingested material.

Detailed explanation-4: -phagocyte, type of cell that has the ability to ingest, and sometimes digest, foreign particles, such as bacteria, carbon, dust, or dye. It engulfs foreign bodies by extending its cytoplasm into pseudopods (cytoplasmic extensions like feet), surrounding the foreign particle and forming a vacuole.

Detailed explanation-5: -Phagocytosis is a cell taking in a large object that it will eventually digest. The classic example is an amoeba eating a bacterium.