IgM antibodies are much more efficient than IgG at activating the complement cascade. However, under certain circumstances, IgG antibodies will activate the complement pathway. One example of a situation in which IgG binding to its antigen will not trigger the complement cascade is when the IgG antibodies are neutralizing a bacterial toxin protein by blocking the receptor-attachment site on the toxin. the IgG antibodies are binding self-antigens, such as chromatin released from dead cells. the IgG antibodies bind to a bacterial surface by recognizing a repetitive polysaccharide component of the bacterial capsule. the IgG antibodies bind to a viral capsid protein that is present in more than 100 copies on the viral particle surface.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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IgM antibodies are much more efficient than IgG at activating the complement cascade. However, under certain circumstances, IgG
antibodies will activate the complement pathway. One example of a situation in which IgG binding to its antigen will not trigger the
complement cascade is when
the IgG antibodies are neutralizing a bacterial toxin protein by blocking the receptor-attachment site on the toxin.
the IgG antibodies are binding self-antigens, such as chromatin released from dead cells.
the IgG antibodies bind to a bacterial surface by recognizing a repetitive polysaccharide component of the bacterial capsule.
the IgG antibodies bind to a viral capsid protein that is present in more than 100 copies on the viral particle surface.
Transcribed Image Text:IgM antibodies are much more efficient than IgG at activating the complement cascade. However, under certain circumstances, IgG antibodies will activate the complement pathway. One example of a situation in which IgG binding to its antigen will not trigger the complement cascade is when the IgG antibodies are neutralizing a bacterial toxin protein by blocking the receptor-attachment site on the toxin. the IgG antibodies are binding self-antigens, such as chromatin released from dead cells. the IgG antibodies bind to a bacterial surface by recognizing a repetitive polysaccharide component of the bacterial capsule. the IgG antibodies bind to a viral capsid protein that is present in more than 100 copies on the viral particle surface.
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