Which of the statements below describe an example of innate immunity?Choose ALL correct responses Question 3Select one or more:a.Mast cell activation and the release of inflammatory mediatorsb.Dendritic cells engulfing and digesting a pathogen and migrating to the lymph nodec.Complement activation by IgG antibodies bound to the surface of a bacteriumd.Production of IgE antibodies specific for helminth proteins by B cellse.Trapping and removal of bacteria by mucus and cilia in the respiratory tractf.Killing of a virus infected cell by cytotoxic T cells

The correct responses that describe an example of innate immunity are:

a. Mast cell activation and the release of inflammatory mediators b. Dendritic cells engulfing and digesting a pathogen and migrating to the lymph node e. Trapping and removal of bacteria by mucus and cilia in the respiratory tract

Explanation:

Innate immunity refers to the body's initial response to pathogens, which is non-specific and has no memory of past infections.

a. Mast cells are part of the innate immune system. They release inflammatory mediators like histamine when they encounter a pathogen, which helps to increase blood flow and attract other immune cells to the site of infection.

b. Dendritic cells are also part of the innate immune system. They engulf and digest pathogens, then migrate to the lymph nodes to present the pathogen's antigens to T cells, initiating the adaptive immune response.

e. The trapping and removal of bacteria by mucus and cilia in the respiratory tract is another example of innate immunity. This is a physical barrier that prevents pathogens from entering the body.

On the other hand, options c, d, and f describe examples of adaptive immunity, which is a specific response to a particular pathogen and has a memory of past infections.