AP BIOLOGY

Detailed explanation-1: -The process where these white blood cells surround, engulf, and destroy foreign substances is called phagocytosis, and the cells are collectively referred to as phagocytes. Phagocytes eventually die. Pus is formed from a collection of dead tissue, dead bacteria, and live and dead phagocytes.

Detailed explanation-2: -A type of immune cell that can surround and kill microorganisms, ingest foreign material, and remove dead cells. It can also boost immune responses. Monocytes, macrophages, and neutrophils are phagocytes.

Detailed explanation-3: -Answer and Explanation: White blood cells (leukocytes) consume pathogens via phagocytosis. Phagocytosis is the method of surrounding antigens and dying cells by binding the receptors of the pathogen or dying cell and ingesting them by forming a vesicle called a phagosome.

Detailed explanation-4: -endocytosis. This process involves the phospholipids of the cell membrane fusing together to form a small circle known as a vacuole. This vacuole is formed around the bacterium to ingest it. Then, the vacuole is attached back to the membrane so the bacterium can be brought into the cell.

Detailed explanation-5: -Phagocytosis is an important process for nutrition in unicellular organisms, while in multicellular organisms it is found in specialized cells called phagocytes. Phagocytosis consists in recognition and ingestion of particles larger than 0.5 m into a plasma membrane derived vesicle, known as phagosome.