How do antibodies function in the immune response?

• A. They destroy pathogens through direct attack.
• B. They identify and neutralize pathogens such as bacteria and viruses.
• C. They recruit more immune cells to the infection site.
• D. They promote inflammation to trap pathogens.

Answer: (B)

The correct choice highlights the primary role of antibodies in the immune response. Antibodies, also known as immunoglobulins, are specialized proteins produced by B cells that have the specific function of identifying and neutralizing pathogens like bacteria and viruses. They bind to specific antigens present on the surface of these pathogens, marking them for destruction or inactivation.

When antibodies attach to a pathogen, they can block its ability to infect host cells, effectively neutralizing its threat. Additionally, this binding can tag the pathogen for other immune responses, facilitating its recognition and clearance by other immune cells. This is crucial in maintaining the body’s defense against various infections.

While there are other important functions of antibodies related to immune response, such as complement activation and opsonization (enhancing phagocytosis), identifying and neutralizing pathogens remains their central and most direct function in the immune system.