A bacterium in the bloodstream is most likely to encounter an _______ antibody.

Question

Quizplus · Accepted Answer

IgG antibodies are the most abundant type of antibody in the bloodstream and provide long-lasting immunity against infections, including bacterial infections. IgM antibodies are the first antibody produced during an initial infection, but they are not as effective as IgG in providing long-term immunity. IgE antibodies are involved in allergic reactions and not typically produced in response to bacterial infections. IgD antibodies are found on the surface of B cells but do not play a major role in defending against bacterial infections. IgA antibodies are most commonly found in mucosal secretions and provide local immunity rather than in the bloodstream.

A Bacterium in the Bloodstream Is Most Likely to Encounter