Question

The immunoglobulins ______ increase antimicrobial activity in mucus-coated surfaces of some organ systems.

Options

• IgA

• IgE

• IgG

• IgM

Answer 1

The immunoglobulins IgA increase antimicrobial activity in mucus-coated surfaces of some organ systems.

Explanation:

IgA is the immunoglobulin primarily responsible for increasing antimicrobial activity on mucus-coated surfaces of some organ systems, such as the respiratory and gastrointestinal tracts. It helps prevent colonization by pathogens and provides a crucial defense at mucosal barriers. Other immunoglobulins like IgE, IgG, and IgM have different roles in systemic immunity rather than mucosal surface protection.