A Antibodies are a Y-shaped protein that are secreted by the immune system to identify and neutralize pathogens in vertebrates. Antibodies have an antigen binding site that allows for binding to surface
proteins found on a specific pathogen, called antigens. All cells have identifying protein markers on the surface that specify whether it's foreign or a part of the same organism. Some pathogens have the
ability to alter their antigens preventing antibodies from identifying them
Which of the following arguments isBEST supported by this information?
Antibodies must be a complex protein because it is only found in vertebrates
Pathogens can release their own antibodies to fight off host immune system
The shape of an antigen allows for antibodies to identify the cell, indicating that the shape of the protein provides specificity
The binding site of an antibody can be altered to accommodate more pathogens.
B
C
D
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