Laboratory isolation of an anti-Streptococcus antibody was found to bind to ten Streptococcus pyogenes at one time, the antibody isolated was:

Question

Quizplus · Accepted Answer

IgM antibodies are pentameric and have ten binding sites, while IgG antibodies are typically monomeric and have only two binding sites. The other antibody types listed (IgA, IgD, and IgE) are unlikely to have such a high number of binding sites.

Laboratory Isolation of an Anti-Streptococcus Antibody Was Found to Bind