Question

What happens when antibodies bind to specific antigens?

• A. Kill the pathogen that the antigen belongs to
• B. Activate cytotoxic T cells
• C. Acivate complement system
• D. Both B and C

Answer 1

The correct option is D Both B and C

Opsonisation is the process by which the pathogen is recognised for ingestion and eliminated by the phagocytes. Opsonization involves the binding of an opsonin (antibody) to an epitope on a pathogen. After opsonin binds to the membrane, phagocytes are attracted to the pathogen. Phagocytes engulf the antigen and promote phagocytosis (digestion of antigen).

So, the correct answer is 'Opsonisation'.