Opsonins function by
A) poisoning and killing invading cells.
B) marking or tagging pathogens so phagocytes can find and ingest them.
C) digesting invading cells directly.
D) poisoning and killing invading cells and marking or tagging pathogens so phagocytes can find and ingest them.
E) poisoning and killing invading cells, marking or tagging pathogens so phagocytes can find and ingest them, and digesting invading cells directly.

Question

Quizplus · Accepted Answer

Opsonins are molecules that bind to pathogens and mark them for destruction by phagocytes. This process is called opsonization, and it enhances phagocytosis by making it easier for phagocytes to recognize and engulf pathogens. Opsonins do not directly kill invading cells or digest them; instead, they help phagocytes to do so. Therefore, the best choice is B, which correctly describes the function of opsonins.

Opsonins Function by